★ 5

This gym is amazing!! David is an excellent coach and you will have a workout that not only changes your body but your mind as well. I always leave after a workout and am so thankful for any time I spend at Karttia!

Source: Google

★ 5

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★ 5

Coach David is amazing. I love the community. I love coming here when I’m in town. Its the best gym in Jacksonville.

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★ 5

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★ 5

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★ 5

KarTTia has fitness for all ages. I am in my 60's and a nurse. I can work my 12+ hour shifts thanks to KarTTia. I see teenagers and members older, classes and personal training going on during the day. There is something for every person! Music and friendly people!

Source: Google

★ 5

Shout to David and his team! Everyone hates mondays, but that’s hard to do when David’s spirit and high energy is how you start off your day/week. Always a much needed and welcomed jumpstart.

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★ 5

So much FUN!! I love the motivation from the coaches, the daily variety in the workouts, and the loud music that just gets you in the zone. Highly recommend.

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★ 5

David and his staff are excellent and they bring it everyday!!!

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★ 5

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★ 5

I’ve done CrossFit, worked out and the Y, but nothing can compete with KarTTia!

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★ 5

I had a really good time here. It was fast paced, High Energy, Creative workouts, All year round. Great community overall would highly reccommend to anyone who's serious about getting in to shape and doesn't like huge gyms

Source: Google

★ 5

I have been a member of multiple fitness centers during my 35 years plus in Jacksonville area. Without question, KarTTia Fitness is #1. Good for the beginner or dedicated athletic. Good fit for high school and college athletics, both male and female.

Source: Google

★ 5

KarTTia is hands down the best gym I’ve ever worked out at! The workouts are creative, consistent, and challenging, and the coaches care about their members like no other! My husband and I were driving 30+ minutes one way every morning to attend. We have since moved from Jacksonville, but I still compare every group fitness workout to KarTTia. We saw great mental and physical results, and got an awesome community!

Source: Google

★ 5

Awesome company and even better people.

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★ 5

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★ 5

I love coming here such a fun community to be apart of.

Source: Google

★ 5

Source: Google

★ 5

KarTTia Fitness has created a huge positive impact in my life. I feel healthier and happier every day because I know I am working towards becoming the best version of myself. Coach David truly cares about helping me achieve my goals. I highly recommend joining KarTTia Fitness.

Source: Google

★ 5

It's a great place to stay motivated to work out, and there is often room for last minute adjustment to my schedule which is nice.

Source: Google

★ 5

This was my first experience in a group setting. I was made very comfortable and enjoyed the workouts. David is an excellent motivator!

Source: Google

★ 5

Outstanding workout place. Not the ordinary. Ron is a thorough pro and understands body movement better than anyone I have trained with in the last 20 years.

Source: Google

★ 5

I have been going to sessions at Karttia Fitness for over a year and a half now. I am down 20lbs of fat and increased my muscle. Karttia is a perfect mix of HIIT and heavy weight training. The kettle bells are a game changer.

I travel often for work and Coach David has put sessions together for me to do while I am on the road and even let me borrow equipment when I was going to be out for extended time.

I have never been to a fitness studio that cared so much about their members, until now. Karttia has changed my life and made me a stronger man, father, and husband.

Source: Google

★ 5

KarTTia is a great place! Clean, good people - fun place to help one achieve better!

Source: Google

★ 5

Great atmosphere and challenging workouts every time. The commitment to building community and helping individuals get stronger and healthier from David is unmatched!

Source: Google

★ 5

KarTTia is amazing! David and the crew are so welcoming and kind. Incredible place to work on your fitness goals with a great community behind you.

Source: Google

★ 5

Source: Google

★ 5

Every time I go to workout it’s always an awesome vibe. Everyone is nice and the workouts are amazing.

Source: Google

★ 5

Can’t say enough great things about being a part of this Kommunity!!! I moved to the area looking for a group fitness setting that would challenge and motivate me to show up everyday and boy was I blessed to find KarTTia! Koach David is awesome and truly cares about the people walking through the doors everyday. The small group setting allows for more personalized attention to make sure you’re getting the most out of your workout and no workout is ever the same. Great people, great vibes, always high energy would 11/10 recommend!!

Source: Google

★ 5

Loved the experience each time I went and am looking forward to going again as soon as work slows down! Super kind and helpful ! Highly recommend

Source: Google

★ 5

really enjoyed the gym! great people, great workouts, great coaches!

Source: Google

★ 5

I've been searching for a fitness studio that truly understands the balance between challenging workouts, personalized attention, and a welcoming atmosphere, and I finally found it at KarTTia Fitness. From the moment you walk in, you're greeted with a smile and a genuine interest in your fitness journey. This isn't your typical crowded gym; the small class sizes allow the Koach to provide individualized feedback and modifications, ensuring you're getting the most out of every session and preventing injuries.
I've tried a variety of classes, from high-intensity interval training to restorative yoga, and each one has been exceptional. The Koaches are highly knowledgeable, motivating, and genuinely care about their clients' progress. They create a supportive and encouraging environment, pushing you to achieve your best while respecting your individual limitations. The studio itself is impeccably clean, modern, and well-equipped with top-of-the-line Techno gym equipment.
Beyond the workouts, KarTTia Fitness fosters a strong sense of community. I've met some amazing people and look forward to seeing familiar faces in class. It's more than just a gym; it's a place where you feel supported, motivated, and empowered to reach your fitness goals. If you're looking for a boutique fitness experience that delivers exceptional results and a truly personalized approach, look no further than KarTTia Fitness. Highly recommend!

Source: Google

★ 5

If you're ready to get your butt kicked and feeling great on the way out, THIS IS YOUR PLACE!

Source: Google

★ 5

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★ 5

David is an amazing coach and have always enjoyed working out with him! Truly cares about every single person that walks through his doors and it shows.

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★ 5

Have been going here for 8 months now and it's one of the best gym cultures/experiences that I've ever been a part of it. Recommend anyone come check it out and see it for yourself.

Source: Google

★ 5

David and the Krew are amazing! Thank you for always keeping me on track and cultivating this gym family!

Source: Google

★ 5

I cannot say enough good things about Karttia Fitness and the high standards that David keeps at his facility. My wife and kids all work out here, along with me. I never “tweak my back” when I’m in these sessions, it only feels BETTER! Great energy and environment for a positive fitness experience!

Source: Google

★ 5

David is seriously the best! He is the best encourager, motivator, and fun coach all while helping you push yourself to achieve your goals!

Source: Google

★ 5

We absolutely love the workouts at KarTTia. Amazing staff, highly encouraging and knowledgeable. An awesome Fitness Family to support whatever your goals are!

Source: Google

★ 5

Amazing gym! I was 3 months postpartum when I started here. David was so encouraging and supportive giving modifications where needed. Love the community and the tribe you find here. Wish we still lived in town. Awesome location at the beach. Definitely worth checking out!

Source: Google

★ 5

Coach Dave, I just wanted to say thank you for always pushing me to show up, even when I don’t want to. Your dedication and accountability keep me going, and I know if I ever miss a workout, I can count on a text or call from you! Your motivation means a lot, and I appreciate everything you do, KarTTia is truly an amazing place !

Source: Google

★ 5

Source: Google

★ 5

Trying to get back into working out after finishing college athletics while also looking for a faith based gym, I came across KarTTia! The intensity of the classes is great and accommodating for whatever your fitness level! It was truly a blessing to find a great community of people to work out and sweat with but also be able to do life with!

Source: Google

★ 5

This gym is hands down one of the best fitness communities out there! The group fitness classes are challenging, motivating, and so much fun, with a great mix of workouts that keep things exciting. The trainers are knowledgeable, encouraging, and truly invested in helping everyone succeed. Whether you're in a class or doing personal training, you always feel supported and part of a community. If you're looking for a gym that pushes you while also making you feel like family, this is the place to be!

Source: Google

★ 5

You will never find more supportive and motivating krew. David will work with you on your terms, your schedule, and will address your needs. You will feel welcome, appreciated, and cared for. Wonderful place to get moving. Simply the best!!

Source: Google

★ 5

David has been an amazing fitness trainer, motivator, and overall positive influence in my life. The genuine care he shows for all of his clients (and this community) makes each visit to the studio feel more like hanging with a very good friend….except you sweat a lot and ache the next day! My initial planned 3-month time with David, has turned in to over a year. And, at 60+ years of age, I am stronger and more flexible than I have been in many years.

Source: Google

★ 5

I’ve never been a “gym” person, but KarTTia Fitness changed my mind! They were patient, encouraging, knowledgeable and made me feel part of the class and the KarTTia family from day one!! Whether you’re a newbie or you’re looking to be challenged, this place and its staff are for YOU!!

Source: Google

★ 5

One of the best gyms I’ve been to. Dave knows how to create a workout and - just as importantly - knows how to motivate you during the workout. You need to try it if you’re in the area. Thanks Dave!!!

Source: Google

★ 5

Karttia Fitness changed my perspective on group fitness studios! The loving community that can be found here fosters a place of fellowship. Not to mention, an experience of a lifetime! One that is about so much more than just your physical health and well-being. All of which wouldn’t be possible without the founder and head coach, David. He is truly such a blessing and God send! He has redefined what it means to experience true accountability servanthood integrity and successful development of confidence and sense of self 💚

If any of these values align with your beliefs, you have come to the right place.. Where you truly get out, what you put in!

Source: Google

★ 5

David and team creates an environment of inclusivity and family vibes regardless of age or ability!

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★ 5

The workouts at KatTTia are so fun and exhilarating!

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★ 5

Awesome 💫

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★ 5

Very energetic, warm & welcoming!!!

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★ 5

Our son who is a competitive golfer has trained with David we don't have enough positive things to say about this fitness, professional, and the studio. fantastic!!!!

Source: Google

★ 5

As soon as you walk in, you realize you are immediately part of a wonderful fitness family! David actually cares about every single person and will help guide you through your fitness journey, even if you are only able to show up a few times a week. There’s never judgement, only love! I’ve been going for over two years now and wouldn’t think of going anywhere else.

Source: Google

★ 5

I attend KarTTia when I’m visiting Jax beach, I couldn’t have felt more welcomed coming to a new gym with all new faces. The whole team is so sweet & very motivativing. I always make my way back when I’m in town & never regret going.

Source: Google

★ 5

I’ve been a Karttia member for around 8 months. Before here I had a gym membership I hardly used. Now I’m working out 2-4 times a week! I am stronger and have loss weight. It’s a great Kommunity!

Source: Google

★ 5

Highly recommend for a great workout! David is awesome and meets you where you are on your fitness journey!

Source: Google

★ 5

I just recently started at KarTTia and I’m really enjoying it. David is a great motivator specially for the 5am class! And I appreciate the class is suitable for all fitness levels.

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★ 5

Great personal attention

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★ 5

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★ 5

KarTTia has helped my husband and I achieve our fitness goals. We love the classes, the energy, and the people.

Source: Google

★ 5

My experience at KarTTia fitness has been nothing less than amazing. The staff is very knowledgeable and hands on with each member. It is a very tight group setting more like a family. Everyone is welcoming and encouraging with each other. The facility is very clean with modern equipment.

Source: Google

★ 5

LOVE THIS STUDIO! The kulture, kommunity, the Koaches… they’re all the BEST💪🏽 If you’re looking for a place to get fit while having fun, this is THE PLACE to join! Wish I could give 6/5 stars🙌

Source: Google

★ 5

A really positive, inclusive, high energy workout that was perfect for my teen daughter. Even though she was sometimes the youngest, she never felt awkward or left out. Every group she joined made her feel a part of the team.

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★ 5

From the first day I walked in David was so kind and knowledgeable. It was a breath of fresh air to be instructed by someone with such passion. I loved going everyday! This place is definitely worth every penny. Highly recommend.

Source: Google

★ 5

Amazing Gym, Amazing Atmosphere, and even more Amazing Results!! Brought my workout and fitness to whole another level!! Christian owner that truly cares and meets each member where they are!! A gym for everyone. Highly recommend!!

Source: Google

★ 5

This gym is the best!! Wonderful community and Coach Dave is an outstanding human and motivator!!!!

Source: Google

★ 5

I loved working out at Karttia! David is great and the Karttia community is awesome!

Source: Google

★ 5

Amazing experience with David and the Krew! So welcoming and fun! Highly recommend these small group classes.

Source: Google

★ 5

KarTTia is an amazing place with a great variety workouts for every level of fitness, amazing coaching staff, and a fun, family atmosphere. It’s tough to find a place at the beach that has 5 am classes that are worth getting up for, but I’ve definitely found the best at KarTTia!!

Source: Google

★ 5

Before joining KarTTia Fitness, I was completely out of shape—I hadn’t worked out in years! Walking in for the first time was a little intimidating, but David and the crew made me (and my entire family!) feel right at home. They provided the tools, guidance, and motivation we needed to get back on track, and now we’re feeling stronger and healthier than ever. The workouts are challenging but fun, the community is amazing, and the energy in this gym is unbeatable. If you’re looking for a place that will push you, support you, and make you actually enjoy working out, this is it!

Source: Google

★ 5

We love KarTTia! I have done group workouts there and David has a gift of pushing you, regardless of your fitness level, yet he is full of joy and grace. I have also brought my teenage sons with me and they also had solid workouts! I could not recommend this business/family enough!!

Source: Google

★ 5

This place is the real deal! If you want to get in shape, lose a few pounds or get the body you've always wanted...this is place in Jax Beach. Its also really cool that the owner (David) makes it feel like your apart of one big family.

Source: Google

★ 5

KarTTia is everything you are looking for to help you meet your fitness goals! Give them a try!

Source: Google

★ 5

David is awesome and the people who go here are very friendly and welcoming. Always a challenging workout.

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★ 5

Awesome experience! David and Krew really help push you to another level

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★ 5

Awesome Gym! David and the coaches get you energized and hyped. It’s a killer workout every time!

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★ 5

You leave every time knowing you put in work! Love the energy of David and the team! My wife and I love this gym!

Source: Google

★ 5

Amazing gym community with a purpose that drives results! What you're not changing you're choosing. KarTTia can help make that change.

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★ 5

David and his team are so awesome. This is a great local gym full of great people. Highly recommend!!

Source: Google

★ 5

It’s a great place to get in excellent physical shape and make good friends

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★ 5

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★ 5

great and supportive gym

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★ 5

Great gym

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★ 5

Just finished my 100th class! What a great place for training and also community. Thanks David!

Source: Google

★ 5

Never thought I was a group fitness guy until now. I have been part of the KREW since Memorial Day 2024 and I have found my fit when it comes to group fitness. The workouts are challenging and at times competitive. The coaching and attention you get is key to avoid injury and the environment is upbeat and filled with a spirit of KOMMUNITY (IYKYK). Initial classes are free to try and personal training is available too if group fitness isn't for you. Koach David even Kreated a Kustom Klass for me and my sons on my 40th Birthday.

Source: Google

★ 5

I love this CrossFit style, high intensity, but quality training for performance kinds of workouts. David is a true professional gym owner with quality equipment. Amber is an incredible trainer who will help you push your limits without breaking you. They are both positive encouraging and the gym is clean with the highest level of gear on the market Would highly encourage anyone who is looking for quality trainers and an atmosphere that positive encouraging to join Won’t regret it

Source: Google

★ 5

Karttia is a fun environment. The staff is positive and encouraging. Amber is my PT and she is everything a woman needs for fitness! Amber is fitness focused and will push you beyond where YOU believe you can go. Show up and she got you! David worked with my son before going off to bootcamp and did a phenomenal job. David as well as the other members were very encouraging and helped motivate him. Highly recommend Karttia!

Source: Google

★ 5

Source: Google

★ 5

By far one of the best workout studios in Jax Beach. The staff is there to help beginners or to help challenge those who have been in the gym for a while.

Source: Google

★ 5

As an avid avoider of exercise . . . I have finally found something I can and WANT to stick with at Karttia! Smaller group classes with personalized support from the most motivating coach (David) and personal training times if you prefer. Short but incredibly effective workouts, top of the line machines, and super friendly atmosphere from staff and clients has made regular exercise attainable for me. I have not felt this great in a long time. Not to mention, they have the BEST cleaning crew at the beach :-)

Source: Google

★ 5

David (owner) has to be one of the nicest people I have ever met. His energy and positivity makes me want to get moving right away.

Source: Google

★ 5

My girlfriends talked me into joining this gym after all of their great outcomes with weight loss and experience with gym culture. I have been bumming around for quite some time and was intimidated to do an intense workout again. Coach David is amazing…the workouts change daily, are high energy, use muscles I never knew I even had and are actually a lot of fun. He’ll text you to check up on you and motivate you to come when you are having an unmotivated day…which is great when you are a tired mom with 3 littles. The membership options are great because if you can’t commit to a full membership you can do drop in classes. It’s a fun, great workout with friends. If you are considering trying out gyms, this one is a definite try!

Source: Google

★ 5

I absolutely love this place! David's energy and motivation during the workouts make you get the most out of every session. Intense, personalized, and FUN! The crew is incredible and it will help you keep accountable. KarTTia Fitness is everything I had always looked for in a workout: good cardio, strength and motivation, in a group setup. I highly recommend trying it out, you will not regret it!!!

Source: Google

★ 5

I had the pleasure of attending KarTTia Fitness for a weekend class. The class was fun, the energy in the room was motivating, and the people were really great! David watched every member's form, while offering encouragement to their level. Every single person introduced themselves to me, which was very welcoming and made me feel like I had been there forever. I can see that KarTTia Fitness does what they say they do! Congratulations to David and Krew!

Source: Google

★ 5

Absolutely unmatched workout anywhere in Jax Beaches area. David works with each person to ensure he meets us at our own fitness level. He has worked with me one on one in areas I need more strength. He's motivating and keeps us moving and sweating! Such a great Krew too....everyone is welcoming and genuinely happy to see each other at the workouts and meet-ups! Love my KarTTia family!

Source: Google

★ 5

Amazing workouts and David is a great trainer and owner. He welcomes all levels of fitness and has a heart to help everyone. I highly recommend joining

Source: Google

★ 5

If you’re looking for a fantastic workout and community, look no further! Coach David and the Karttia team are the best in Jax. Find your krew and newest workout at Karttia. As a former student-athlete, it was hard to find a workout that fit my needs, but Karttia is exactly what I was looking for.

Source: Google

★ 5

KarTTia is great place to workout and meet some great people as well. David has a gift for taking people to the next level during training sessions and creating an environment for people of all skill levels to work out. If your looking for a new place to workout give KarTTia fitness and opportunity to take your training to the next level.

Source: Google

★ 5

Coach David and KarTTia Fitness community have been the most amazing 🤩 group, and I’m so thankful for them! Everyone is so supportive and friendly no matter your fitness level, which I didn’t feel when I tried some other brands. The workouts with KarTTia are always fresh and surprising me with different equipment being introduced all the time, and the exercises are easily modified if I want a more challenging morning or if I need to take a step back that day. I have to give a shout-out to that #5amkrew 🌅 but I also love getting to meet up with everyone at the beach workouts and family friendly happy hours too. 💚

Source: Google

★ 5

Amazing gym, coach and community of people!! I have a high sense of accomplishment at the end of each workout. The Owner/Coach truly loves what he does and cares about each of his members. I would recommend this fitness studio to anyone of any age!

Source: Google

★ 5

If you want to test your limits and sweat and then sweat some more KarTTia fitness is the place for you! Very welcoming and always a name and not just a number. Coach David will push you to new heights every session!

Source: Google

★ 5

What a great studio! Awesome variety of equipment and exercise, energetic staff, welcoming members and a great app. Whether it’s a coach led session or I pop in open gym for a little lifting or a run, always a fantastic vibe.

Source: Google

★ 5

Great workout!! Love the community and extremely welcoming :)

Source: Google