★ 5

I met Mary at a private event she was hosting at her Pilates studio, and from the beginning I loved her approach to fitness.

Her all-women’s private gym is truly unmatched the space feels safe, empowering, and thoughtfully designed for women at every fitness level.

Coach Mary is incredible. She pays attention to every detail, meets you exactly where you are, and pushes you in the most encouraging and supportive way. Her energy, knowledge, and genuine care make every session something I genuinely look forward to. You can tell she’s passionate about helping women feel strong, confident, and capable.

The entire gym is built around creating an amazing experience, from the equipment to the atmosphere to the personalized approach. I can’t recommend this place enough. If you’re looking for a gym where you feel seen, supported, and inspired, this is the one!

Source: Google

★ 5

I’ve been training with Mary at MK Fitness since March this year, and the results have been incredible! Since joining, I’ve lost over 30 pounds and gained noticeable muscle. Mary is an excellent trainer — knowledgeable, motivating, and genuinely kind. She gives great advice that’s easy to follow and makes every session both challenging and enjoyable. The gym itself has a great atmosphere and supportive community. Highly recommend MK Fitness and Mary to anyone looking to get real results!

Source: Google

★ 5

MK Fitness is Professional, motivating, and truly cares about your success. Couldn’t ask for a better trainer.

Source: Google

★ 5

I joined this private gym two months ago, and it has truly become my happy place! From the moment I walked in, I felt welcomed and supported. The space is clean, well-equipped, and never overcrowded—perfect for focused, effective workouts.

A huge shoutout to my Mary—she’s incredible! Her energy, knowledge, and encouragement have kept me motivated and excited to show up each week. She really listens, personalizes each session, and pushes me/ us in the best way. I’ve already seen amazing progress, physically and mentally.

If you’re looking for a gym that feels more like a community than a crowd, this is the place. Highly recommend!

Source: Google

★ 5

Source: Google

★ 5

Source: Google

★ 5

"Mary is an amazing trainer! Her knowledge and passion for fitness really shine through in every session. She tailors workouts to suit my needs and keeps me motivated. I've seen great results since I started training with her, and I can't recommend her enough to anyone looking to improve their fitness!"

Source: Google

★ 5

I started training with MK (Mary) back in August of 2023 and I kick myself all the time for not starting sooner. I’ve been a part of many class based gyms before but nothing compares to being a member of MKFitness. It’s a group setting but there are only about 6-8 people in the class at a time so it’s a little more personalized without being so intimate with a trainer 1:1. Mary makes her priority whatever your priority is for your health goals whether it’s weight loss, weight gain, muscle gain, or a full on body recomposition. Everyone who is there is there for a different reason and I think this is incredible. She keeps her clients accountable by requiring regular body scans, and providing meal plans for those of us who struggle with the nutrition part of achieving fitness goals. She has a strong focus on building strength in women and growing muscle groups that are significant for long term health and life longevity which is something I appreciate very much! Not to mention she is an incredible coach and mentor. I think she’s been in the fitness industry for 20+ years so she isn’t new to this and has seen it all. It shows when she’s explaining what we’re working on and why we are focusing on certain muscle groups, etc! She’s also extremely encouraging in the gym and someone who will push you to your fullest potential while understanding your personal vulnerability to what you’re doing. I always tell people who ask me that a traditional class-based gym won’t get them the results they’re looking for if they have specific goals. I know because I’ve been there and this is the longest I have ever been a part of a fitness community without quitting or getting over it after a while.

Source: Google

★ 5

MK fitness has truly changed my life in the best of ways. The owner Mary is a phenomenal coach, trainer, supporter, and now friend. The encouragement she gives all the women she trains is next level.
The training she’s given has not only changed my physique but also the daily routines I’ve developed outside of my workouts. She created a meal plan that has a really set up the next phase in my fitness life to really reflect the work I’m putting in at the gym.
The gym itself is incredible. I truly look forward to my training days w Mary. She even has merch! Nothing like walking in to a gym and the vibe is welcoming, inviting and tailored for women to feel confident and strong.
Wherever you’re at in fitness, or if you have yet to begin, I highly encourage you to give her a call to start training.

Source: Google

★ 5

This gym has been a blessing to me both mentally and physically! MK fitness is a true dream and Mary is full of lots of knowledge and love and positivity and truly loves what she does and it shows! I also love that The environment is private and clean with high quality workout equipment.

Source: Google

★ 5

If you want to change your life transfer your body and become a better person literally choosing Mary as your trainer and going into MK fitness will forever change your life she’s the best trainer and this is the most cleanest and fabulous I’ve ever been to in my life - Mk babes hell ya

Source: Google

★ 5

Obsessed is an understatement. This is the most amazing workout you will ever experience. Mary is such an inspiration. She drives you and pushes you in every way possible. From the environment to how welcome I felt makes me come back three times a week. She’s not just my gym instructor: she’s influenced my life and made me feel comfortable within my own skin. She knows all of her girls’ strengths and weaknesses and works with each and every one of us to ensure we are meeting our fitness goals. She has transformed my body and made me love the skin I’m in. I love to come to the gym just to see her and workout. The gym is always clean: top of the line equipment and the best is nothing is the same. You will always have something new to do: from the workout routine to the floor exercises. Aside from the gym she has the most comfortable clothing line :MK athleisure. Who doesn’t want to feel and look good while working out. She cares about each and every one of us and most importantly ensuring our form is correct while maneuvering through each workout.

Thank you Mary for not only being my trainer but caring and motivating me to be a better version of myself. She was the best decision I ever made.

Source: Google

★ 5

I don’t leave reviews often but when I do! It’s either a love/hate, well in this case it’s a love! 💕 As someone who took a workout hiatus for a couple years *oops* I knew I was losing muscle mass and wanted to get back to how I used to look. Walking the dog and yoga weren’t cutting it. So I found MK Fitness - it’s been a game changer for so many reasons. Let’s start with the setup - inviting environment, clean and good equipment. Secondly, community and camaraderie, your group time becomes your tribe and you ultimately look forward to coming in twice a week. Saving the best part for last! MK herself, MARY! She’s a force not reckon with, an energizer bunny that keeps our morale high and forces us to really push ourselves and do our best! She is the glue that makes MK Fitness what it is. So glad I came to this place! *kisses bicep* 💪💋

Source: Google

★ 5

Mary and MK Fitness have been a godsend. She helped me reconnect to my body and confidence when I was at a low period, frustrated with gimmicks and quick-loss hacks. Mary truly understands health as an entire whole-person approach and I love that she promotes being strong over being “skinny.” The way she operates the gym, especially the small group sessions, was surprisingly easy to get used to and it creates a tight-knit group of women who support each other and hold each other accountable. I love my MK tribe! Mary is so much more than a trainer, too. She is family! The gym is spotless and has a ton of equipment; the space has been maximized for ultimate flow and every piece of equipment is intentional. Even now through this new and unexpected period of life—pregnancy—Mary has made accommodations that have allowed me to continue being healthy and show up for myself. The fervor is real, people! MK Fitness and all that comes with it is one of the best decisions I’ve made for my health in a long time.

Source: Google

★ 5

I love how dedicated and over the top loving Mary is to all her clients! I’ve had the honor of being an MK Babe for a year now and I absolutely love her workouts and even more my results! Everything is bougie ✨ top of line equipment and the best most comfortable and sexy Athleisure wear ever! Mary really puts a lot of heart into all the little things that really make all the big things. I highly recommend to anyone who is looking for a coach who cares, inspires, empowers, & transforms! Heart of Gold 💛

Source: Google

★ 5

Where do I even start…. I found out about Mary through friends and family. Every time I talked about wanting to start working out again, Mary and her gym were brought up. However, having a personal trainer always intimidated me. So, I stuck with doing my peloton workouts and going to Orange Theory. I started to realize I was working out all wrong and none of those things were targeting what I actually wanted to accomplish. So, I finally reached out to Mary. I can say, it was by far the best decision I have ever made. I have been going for a few months now and have already seen a HUGE difference and change in my body. She has helped me focus on what my main concerns are and see continuous progress. Mary is so wonderful and so knowledgeable. She wants to see us healthy and thriving! It’s easy for me to say I love working out because of her. As for her gym, it has everything I need and she makes sure we utilize every single machine she has to target our goals in some way shape or form. If I recommend anyone to a semi private trainer, it’s to Mary. You won’t regret it.

Source: Google

★ 5

I can't say enough great things about Mary! She is driven, passionate, knowledgeable and all around just a wonderful human being. As a trainer, she consistently seeks to not just train her clients, but also educate them about proper technique, nutrition, and the importance of a well-rounded lifestyle. Her training sessions are intense and fun, and the sense of community she has managed to create is a rare find. Every single person that trains with Mary is there to (1) show up for themselves but also (2) support every other person in the room. It is the most welcoming and supportive fitness community I have ever had the pleasure to be a part of. Aside from training, she also has her own boutique line of athleisure wear that she is equally passionate about. No cheap, see-through, falling apart after three washes items here. Every piece is thoughtfully designed, well-made, and feels luxurious while wearing...even while sweating your way through a workout. Mary is a true gem!

Source: Google

★ 5

Mary is so inspiring and motivating! I look forward to each session I have with her. She knows when I’m not pushing myself and will remind me to pick up a heavier weight or fix my form. She’s created a wonderful gym community that encourages women to be the best versions of themselves. Thank you for always pushing me, Mary!

Source: Google

★ 5

Mary you are inspiring! It has been my first week at MK Fitness, and I want to say a huge thank you to Mary and the MK ladies for making me feel so welcome. Mary has taken the time to teach me the importance of how her personalised workouts will benefit, along with educating me on my body composition analysis and the required change of diet to meet my goals. Mary continues to encourage me to elevate my strength levels during my workouts and her MK ladies are right there cheering me on too!

Thank you all for your continued motivation, I am super excited for this new growth and I cannot wait to see more progress.

Source: Google

★ 5

Joining Mary's gym was one of the best decisions I've ever made towards bettering myself, and the best decision I made for my body and my health!

I first started working out with Mary because I wanted to get toned for my sister's wedding in Cabo. Mary explained to me that while she's obviously going to help me reach my goals, her main priority for her girls is to change their lifestyle. I am happy to say after less than 3 months of working out with Mary, not only have I reached my initial goal of becoming toned, but I now plan on making fitness a part of my lifestyle forever.

Before Mary, I was skinny but not fit at all and I could see that I was losing my curves. I never worked out with weights before because I was afraid I was going to look bigger but Mary completely transformed the way I see fitness. I love weight training now- it has transformed my body into one that is strong, slim, and yet curvy all at the same time. The body I have now is one that I didn't think was possible for me to achieve ever, let alone achieve in such a short time (I literally lost 4% body fat in less than two months all while eating more).

One of my favorite things about Mary is that she's really caring but the last thing she will let you do is make excuses for yourself. Mary inspires me but also makes it clear that I have to answer to her if I am slacking off in any way, which is exactly the type of tough love that's needed in a great trainer. I know I wouldn't be able to achieve what I have in so little time if didn't have Mary there to push and encourage me.

And lastly, I appreciate how Mary has put so much effort into making her gym a positive and motivating environment that is literally always clean and always smells good.

Mary changed my life and I am so grateful for her. Thank you Mary for everything you do for your clients, we're all very lucky to have you!! <3

Source: Google

★ 5

MK Fitness is not just a gym but a whole lifestyle. Anything I say about Mary is just an understatement because there are no words to describe how much of an amazing trainer she is. Considering that I’ve worked out with so many other trainers for over 10 years, Mary is the ONLY trainer that has transformed and shaped my body like no other. I don’t remember the last time I looked this way, and I can confidently say that age 30, my body is looking it’s best ever! Mary has a vast knowledge on fitness and nutrition that maintains all that weight loss and makes sure it stays off. Aside from Mary helping me transform physically, she has helped me transform mentally and emotionally as well. She is someone I can always go to whenever I need that extra push of motivation or a nice little pep talk. MK Fitness is truly my sanctuary, it is somewhere I go leaving with a smile on my face without failure, even on my worst days. Mary has created this safe and fun spot for her clients where everyone is continuously motivating each other to push their limits. I used to dread going to the gym, but now it is something I look forward to doing during the week and something that truly excites me. Now, as for the gorgeous gym Mary has built from scratch , all I can say is WOW!! The cleanest and chicest gym EVER! All the equipment she has in the gym is state of the art. The aesthetics are beautiful all over, and the best part, the front is a mini shop for MK Athleisure. Mary has designed a beautiful athleisure line that I have found to be the most stylish, comfortable, and affordable (coming from a Lulu Stan). I have stopped going to all other athleisure stores because her stuff is just too cute and comfy to pass up on. Best part, anyone can always stop by to check out her line (do it, you won’t be disappointed!). I am so happy and proud to be a part of Mary’s MK Babe Tribe!! I love being a part of a community that overall I have felt has made me a better person in every aspect. If anyone reading this ever gets a chance a join, please do! You won’t be disappointed!!

Source: Google

★ 5

I remember when I first met and talked to Mary. She made me so motivated and excited to join MK Fitness. I am so happy to have found MK Fitness and have Mary in my life. She is more than just a trainer. Mary is a friend, a mentor, and a beautiful person with uplifting positive energy! She pushes me to be the best version of myself and has helped me find it! This is the best I have felt mentally and physically since I have had my kids! She is very educated in all things body and fitness and I have learned a lot from her! She also has beautiful MK Athleisure that is super comfortable, flattering, and makes you feel good! Joining the MK Fitness tribe is not just joining the gym it’s gaining a family! I am forever thankful to be apart of the MK Fitness community and can’t be without it!

Source: Google

★ 5

There aren’t enough words to describe what MK fitness actually is.

Is it an elite private training facility? Yes
Small Group & Private training? Of course
Lifestyle & super cute & sexy athleisure? Yup

The thing is it’s difficult to fully express what the support care & coaching of this amazing woman, friend and role model actually means to not just me but every one of her “babes” Mary is genuine in her individual care for each of her members and it shows.

MK fitness has been the one constant in my hectic life. Even when I don’t feel like working out I can get a great workout in, change my energy, connect with a really nice group of girls, get pumped up with music tailored to our group, Grab a recovery drink, green juice or healthy snack from her well stocked fridge & even get some retail therapy. Can you think of anything better to do in an hour in Rancho?
MK fitness is a special place to do many - it’s our place 💕

Source: Google

★ 5

Mary is the best trainer! I have worked with so many trainers and you will not find one like Mary!

Source: Google

★ 5

Mary isn’t the type of trainer that is scrolling through her phone while shouting orders. She is constantly scanning the room and watching each and every one of her client’s form, effort, and focus. She will assist you before you even ask, let’s just say that it’s her MK intuition. The minute you sign up & join the MK Tribe you feel like you’re family, I feel that she actually cares about my progress not just Physically but also mentally. Mary is consistently encouraging us to keep going and to push ourselves without compromising our self esteem. I personally feel like her business attracts women with the same uplifting, kind, and welcoming energy. You won’t be finding any mean girl’s vibes over here, just a tribe of powerful women challenging themselves every-time they step into her gym. Speaking of gym, MK fitness has state of the art equipment that you’ll only see at the most elite fitness clubs. I love all the glute machines ! I’ve seen such a huge difference in my thighs and bottom without stressing my back or knees all thanks to her amazing equipment. The decor inside the gym is so chic, modern and luxe, which is something I personally look for in any environment I spend my time in. She has a beautiful shop where she has debuted her very own athleisure which is so high quality and flattering it has replaced most of my Lulu collection. Along with her fitness gear, she has beautiful clean candles from oak and ash which come in handy for last minute gifts amongst many other cute Knick knacks that I cannot resist. Mary Khalil invests in everything and everyone around her, we’re all so grateful to have her and I look forward to growing with the MK tribe for the many years to come.

Source: Google

★ 5

Training with Mary was the best decision I have made in all my years of training! Her gym is always clean, glamours, and comfortable to workout in. She is very organized, really cares about your training goals, and is always willing to educate you.
You’ll be glad you joined too ;)

Source: Google

★ 5

Mary is not only my trainer, but she is my mentor, and most importantly my friend. I joined her program a little after I had my second child, it was my get away to actually do something for me and put myself first. She is very knowledgeable in fitness and the anatomy of the body. She offers much more than just a workout, she can help you to heal your body, help with aches, and strengthen your inner self so you can push to be so much more. I’m so glad I joined her team.

Source: Google

★ 5

Mary is truly the BEST! I started working with her 6 weeks after having my second baby and she has been pushing me since! She modifies when necessary and has your personal goals constantly in mind. Best trainer! Not to mention her gym is AMAZING!

Source: Google

★ 5

Mary is the BEST in the industry. She has dedicated over a decade to her professional growth and education and has truly changed the lives of so many women who want to get their health on track! Her gym is out of this world. Her passion and love for what she does is evident in her gorgeous gym (top of the line imported equipment) and in how she treats every single one of her clients like they are her ONLY client. No matter how busy she is, she always has time to answer questions and address concerns! I only trust Mary with my body and I’m so excited to have such a badass trainer in rancho! In addition to this one-of-a-kind gym….she has THE MOST beautiful/flattering/sexy workout gear/activewear! I wear a piece from her collection literally every day! Make the investment in your body and in yourself and go with Mary!!

Source: Google

★ 5

I am so happy that I decided to join the MK fitness group! There’s been nothing but positive energy, love and caring from Mary! I feel great after every workout! I see my body transforming and I’m really happy with my results.

Source: Google

★ 5

Source: Google

★ 5

Beautiful, clean, and organized gym! Mary is an incredible trainer and shares her knowledge to all of her clients while also leading by example. I feel so lucky to have a trainer who truly cares about her clients individually and trains each of us according to our goals specifically. Highly recommend this gorgeous gym and amazing trainer!!

Source: Google

★ 5

I had the honor to train with Mary and it was an amazing experience! Mary's enthusiasm and passion for fitness is contagious and inspiring. You truly feel like she knows where your body is weak and how to train and strengthen it in a safe and progressive way. The workout sequencing is planned and crafted for you in a way that you can sustain it and feel fully challenged. The gym is impeccable, beautifully designed and it has the most amazing Italian equipment that works your body in angles you have never worked before. She is the an artist at heart and lover of beauty and function, training with her will be life changing.

Source: Google

★ 5

MK Fitness is a brand that features an elite trainer, Mary Kalil, and her own exclusive gym/athleisurewear. The athleisurewear is high quality and reasonable. Mary as a trainer is so motivating, inspiring, and on point. The workouts are always changing and fun. The machines in this gym are top of the line. So proud and happy to have such an amazing and exclusive workout experience in East County.

If you aren't a training client, the boutique is open to the public where you were find MK athleisurewear line, as well as other uniquely curated healthy treats and gifts (Candles, books, etc.)

Source: Google

★ 5

Mary is incredibly inspiring, passionate, and sincerely cares about our clients! Being around her pumps me up with positive energy! She shines, and wants all of her clients to be the best versions of themselves! Her body is the perfect model body, too!

Source: Google

★ 5

Five star experience all around and if I could add more stars I would. First her clothing line is up there with lululemon in terms of fit and quality yet reasonably priced.

Second, her willingness to help goes beyond training. She helps you with finding the right supplements (I.e. protein powder), referring you to meal prep options, and tips on how to recover in between workouts. She doesn’t get paid to do this and doesn’t have to! But she just cares.

The training sessions amaze me each time because we accomplish SO much in under an hour. Mary is quick yet efficient. She wears many hats yet she is so organized and available to us. She is tough yet fun. She is consistent yet always changing it up. Perfect balance all around! Been working with her for one year and a half and even though I “know how to work out” I will continue to work with Mary because of how amazing she is.

Source: Google

★ 5

Mary has a passion for fitness and nutrition like none that I’ve seen before! She is extremely knowledgeable in all categories from the machines and workouts to supplements to body scans and everything in between. She is the real deal! Her gym is top of the line with state of the art machines and not to mention she has created the most amazing athleisure! Mary truly cares about her clients and pushes them towards their goals while still making it fun! I have only started recently but I can already see a difference. Mary radiates positivity and makes working out so enjoyable! I’m so happy to be part of MK Fitness!!

Source: Google

★ 5

MK Fittness is truly the elite gym of your dreams! Mary has invested in top of the line workout equipment, nothing you can find at any ol’ gym! Training with Mary is truly LIFE CHANGING! She pushes you to reach your personal goals by customizing each workout to fit your needs. It’s always something new and fun to keep you motivated. She even has her own athletic clothing line! All items are very high quality material, Its my favorite work out attire! If you have goals to get into to shape and to do it quick, then Mary is who you should be training with. I recommend her to all the ladies!

Source: Google

★ 5

Mary is the most amazing trainer who understands me and pushes me to what she knows I can handle. Starting with MK Fitness has truly changed my life and taught me so much about my body and now my love for fitness and doing it in a healthy way! Plus, the gym itself is clean and gorgeous! The boutique is so beautiful and easy to shop! If you ever need amazing comfortable workout outfits or any last minute gifts, this boutique has it all.

Source: Google

★ 5

If you are looking for the best work outs of your life and the best trainer inside and out then Mary is who you would want as your personal trainer. I’ve been working out with her for almost a year and she has completely transformed my body. I am stronger and leaner then ever. She listens to exactly what you want and will tell you how to achieve it. Also, her new gym is just a dream. Perfect in every way possible, I couldn’t love it more! It’s so spotless clean and the machines are top of the line. Thank you Mary for all that you do!

Source: Google

★ 5

Mary is amazing! She is an incredible, inspiring, motivating, challenging, and knowledgeable trainer! She pushes you to be healthier and more confident! She spends time not only on helping me through the exercises, but educating me on the importance of nutrition and sends me (and others) encouraging communications throughout the week! She researches the heck out of everything, so not only does she have the best unique equipment in town, but she carries very clean ingredient bars, drinks, and protein powders! Besides all this, she he has her own sexy Athleisure wear in her cutesy MKFITNESS boutique!!

Source: Google

★ 5

MK Fitness gym and botique is literally a dream come true. The main focus for Mary will always be her commitment to transforming your body and supporting your fitness journey. This beautiful gym makes it even more possible to achieve goals with her specific, one of a kind machines and workouts. She is constantly bringing in clean and nutritional products to further enhance our performance and recovery. Additionally, her athleisure line is stunning, stylish, and most importantly squat proof! Everything is just so convenient and special. It’s really hard to explain unless you experience it!

Source: Google

★ 5

I have been working out with Mary for years. There is no one better in my opinion! She is extremely knowledgeable and dedicated to her clients. Mary is incredible at creating customized workouts that are super effective and enjoyable for everyone who trains with her. Despite my injury, Mary was able to customize a plan to help me achieve my goals! She gives all her clients 100% of her attention and is fully committed to everyone in her MK Fitness family. In addition to training, Mary educates her clients in the importance of each workout. Her new gym is state of the art and the machines are AMAZING! When I’m in the gym, Mary has me focused 100% on my goals, always pushing and motivating my entire group. Mary is constantly inspiring me to stay healthy and active. She has kept me sane during a crazy time! I couldn’t choose a better trainer if I tried! If that’s not enough, she designed and created her own gorgeous athleisure line that has everyone obsessed. Mary is the jack of all trades, and I couldn’t be happier to have her as my coach.

Source: Google

★ 5

The best trainer of ALL time!!!!!! My life has changed since I’ve become a client of Mary’s! She’s taught me so much about fitness, health, food and nutrients! It truly is a lifestyle with her and she makes it all So fun and easy! Couldn’t imagine life without my workouts with MK Fitness!

Source: Google

★ 5

Mary is amazing she will go out of her way to make sure you’re happy and fit. Her clothing line is Amazing also.

Source: Google

★ 5

MK Fitness is an amazing gym filled with top of the line equipment and fabulous workout wear. I have been training with Mary for almost a year now and have lost the majority of my baby weight and gained countless friends. Each workout is differs from the next and challenges you to do better. This is definitely a gem in Rancho San Diego!

Source: Google

★ 5

MK Fitness is the absolute best! Mary is an amazing trainer who makes sure you feel your workout days later. Best feeling! On top of being a fantastic trainer she is an amazing person! Let’s not forget about her athleisure line it is the best! All the sports bras, leggings and jackets are my favorite. My go to is the Ibiza sports bra and the ultra high rise leggings. The softest material amazing for working out in and lounging in!

Source: Google