★ 5

I just finished the 6 week challenge with Grinders Fitness and plan to continue my membership here. The owner and the teachers are humble, friendly, and helpful and the people in the class are super friendly as well! The classes are so fun!

Source: Google

★ 5

Grinders Fitness is the real deal. Whether you’re just starting out or you’ve already got some ring experience, there’s something for every skill level. It’s not your typical “boxing-inspired cardio” spot like Rumble, Title, et al - there are former pro and amateur fighters teaching that will help you level up. The class schedule is convenient, and my favorite part - there’s light sparring twice a week.

If you’re on the hunt for a boxing gym, look no further than Grinders Fitness.

Source: Google

★ 5

Grinders fitness has show me It is an excellent program, the coaches, the colleagues, the environment motivates you to move forward and continue striving for your goals. I started at 370 lbs and now I am at 352 lbs. In just 4 weeks, the nutritional plan and the consistency of the coaches motivates you daily.

Source: Google

★ 5

Grinders is a welcoming and fun atmosphere! Everyone here is so kinda and helpful. 10/10 recommend

Source: Google

★ 5

Been going here almost three years now. Awesome gym with great striking and grappling training. Shannon and Albert are both super knowledgeable and technical in their instruction and coaching, both with black belts in Brazilian Jiu Jitsu and super impressive resumes in the professional MMA scene. The environment is incredibly welcoming, regardless of your level. The sparring here is super technical—no egos, just solid work. The cardio classes are intense and push you, but it’s worth it. I’ve dropped weight, feel way healthier, gotten stronger, and found a great community of great people. Can’t recommend this place enough!

Source: Google

★ 5

Game changer for me.
Great people make for a great environment.

Source: Google

★ 5

I’ve been out of the fitness scene for 13 years due to leg issues. The owner and the instructor welcomed me with open arms! They and the members I trained with for my very first session, made me feel so welcome and helped to modify the work out so I was able to get everything out of it. I will be back for more!

Source: Google

★ 5

The 6-week challenge was tough, but exactly what I needed. It made me realize how important it is to build better habits around fitness, nutrition, and self-care. I’ve worked with Shannon since my days at Title Boxing, where I first fell in love with boxing — and she’s still just as motivating and supportive.

The one-hour workouts are intense but doable at your own pace. Before you know it, the hour flies by and you walk out feeling stronger, both mentally and physically. What really stands out is the Grinder Fitness community, this isn’t a typical gym — they truly care about your goals and help you stay on track.

If you're ready to do the work, be held accountable, and start showing up for yourself in new ways, I highly recommend giving this challenge a shot.

Source: Google

★ 5

Still!!! Top notch workouts in a friendly judgment free atmosphere.Best part if my day seeing Shannon and the rest of the Grinders!!!

Source: Google

★ 5

Welcoming community and great workouts!

Source: Google

★ 5

A really good community gym. Everyone is either minding their own business or really friendly. There's zero intimidating factors whenever I attend a class, and the fitness demographics range from extreme beginners to fit and in shape. I really enjoy this gym a lot, would recommend any of the classes and instructors if you want a serious cardio workout.

Source: Google

★ 5

Source: Google

★ 5

Source: Google

★ 5

Awesome place with Awesome people!

Source: Google

★ 5

Easily one of the best things I have ever done for myself. Coaches, trainers & people there are all top notch. Thank you Grinders!

Source: Google

★ 5

I joined the 6 weeks course to get my self in shape and it was one of the best parts of my day, Shannon really pushed me to do one more rep or an extra 10 sec on the bag. Joining the class was a decision I would not regret I even quit smoking after 13 yrs of doing so, thank you grinders for changing my life

Source: Google

★ 5

Grinders is the best gym I’ve ever been to! I love being a part of this team! Such an amazing atmosphere and amazing coaches!

Source: Google

★ 5

This place is a hidden gem. I’m so glad I found it. I did a 12 week transformation here and cannot say enough good things about the staff and community. Shannon was so encouraging and really held me accountable. Everyone here is so welcoming and encouraging. Not only are the workouts fun but I would burn up to 700 calories per class. I was also given strength training workouts and tracked all of my food in the app. The nutrition plan was life changing. It really reset how I approach and think about food. I went from gaining 1-2 lbs a month to losing 10 lbs on this program. If you are on the fence, just do it. This program is so empowering.

Source: Google

★ 5

The vibe in here is amazing! I feel so good after the intense workouts. Having their support has been very helpful. They send me workouts to do, messages to make sure I'm staying on track, nutrition assistance. I am so happy I joined this gym to see more results. Consistency is key and I have a long way to go to get to where I want to be but I will keep working hard to get to my goal.

Source: Google

★ 5

If I could award 10 stars, I would! This gym and its exceptional team are precisely what you need, regardless of your skill level or fitness objectives. The coaches here are not only knowledgeable and patient but also incredibly encouraging and engaging. Whether your focus is on strength training, technical sparring, weight loss, or competitive pursuits, they provide comprehensive support. Moreover, the community of members is among the most kind-hearted, welcoming, and FUN individuals I've had the privilege of training alongside. In short, joining this gym is a decision you will not regret!

Source: Google

★ 5

I cannot say enough great things about this place!
You want a workout to start your day, Jessica brings the energy and intensity to get you started right!
You want a workout that makes it feel like it isn’t a workout? Beating up a bag is the best way to go! Shannon is one heck of a trainer! She knows her stuff when it comes to fighting and her classes will get you in shape! She also teaches technical striking if you want to really learn how to fight.
You want an owner who genuinely cares for his members? Bill is the man! Every time I go in there or see someone coming in he is there to greet you with a smile and excited to see you showing up!
This place has an amazing community and I highly recommend using the FREE one day trial to check it out!

Source: Google

★ 5

A very good motivated environment to work out with amazing trainers! I started the 6 week challenge in April 2024 and have been going hard and shedding weight ever since! I feel great body/mind. Thanks Grinders Fitness!

Source: Google

★ 5

Great class to start off your Monday morning! Jessica brings fun to working out!

Source: Google

★ 5

This place changed my life🤘🏼🤘🏼

Source: Google

★ 5

Source: Google

★ 5

Tayler is AMAZING!!!!!! Love the classes and definitely improves fitness.

Source: Google

★ 5

It’s awesome. Best workouts, very helpful trainers.

Source: Google

★ 5

Source: Google

★ 5

Source: Google

★ 5

Source: Google

★ 5

I have been going to Grinders Fitness since it opened—it’s great, fun, and the instructors are the best and very supportive. This place is truly more of a community than just a gym, and also has helped me reach my fitness goals while actually enjoying my workouts. Whether you’re a newcomer to boxing or MMA veteran, you’ll love it!

Source: Google

★ 5

I've been with this gym for almost 2yrs now. I appreciate the variety in the workouts, and the fact that I am constantly challenged. I've been with other boxing gyms in the past, and none of them ever came close to the quality I get at Grinders. The classes are worth the money spent, and the classes are amazing. Thank you for all you do Shannon!

Source: Google

★ 1

Seems like a legit spot but I was strong armed into putting some money down ($100). Ultimately, I couldn't afford the full price and was never refunded. High pressure sales, not super nice.

Source: Google

★ 5

I can honestly say joining this amazing gym 3 year ago was one of the best decisions I ever made. I look forward to walking through the doors and always feel pumped up when I leave.
Shannon has given me a sense of accomplishment by pushing me to do my best. She is an incredible trainer; her encouragement and constant motivation pushes me to heights I never thought possible. Workouts kick your butt. I love that I can see how I am increasing my endurance and strength. I find every class challenging, and the variety of workouts keeps me invested in maintaining a consistent motivation to show up and work hard.
Grinders is not just a gym; it is a community that cares about your health and happiness. It truly is a family! Like for example, the day it was snowing hard, and in my haste to clean the windshield I broke the driver’s windshield wiper, two wonderful Grinders, Max and Haley, jump to the rescue, and even though they were unable to fix it, they offered to follow me to the near AutoZone to replace the wiper. Or Bill’s offer, to take me to the shop, where my car was getting new tires. These are the types of things that make us feel we are valued here.
My favorite part of the environment and culture is that the community is so welcoming and supportive, high fives for job well done or how good you look, and I hear these from many of the members, new or old.
I can’t say enough to Shannon, Albert, and Bill for providing such a great gym.

Source: Google

★ 5

I have been a member of Grinders Fitness since before it was known as Grinders and started in the old Karl's Dairy building. Shannon and Albert have been amazing trainers. They're always encouraging and willing to provide modifications to the workouts regardless of your fitness level. They will also provide modifications during the workouts for personalized challenges. The workouts are never the same twice. They offer an endless variety; constantly challenging so you are always pushing yourself to improve. They always have energetic music playing, and the facility is clean and diverse in what equipment and room you can use. Albert and Shannon are always open to your feedback and personal concerns regarding any physical limitations. I also appreciate that regardless of attendance frequency, they are always welcoming and happy to see me. I never feel judged for being inconsistent. I am proud to be a GRINDER!!!

Source: Google

★ 5

On January 28, 2024 I started the Red Carpet Challenge at Grinders Fitness. Starting this challenge has literally changed my life. Back on January 1, 2019 I weighed 131.6 and I started counting calories only consuming, 1200 a day. This had continued until I started the challenge 5 years later. You could say, counting calories was becoming a problem. On 1/29/24 I weighed in with Shannon at 110.2. My body fat % was 18.2%. I was not attending classes at the gym. I worked out at home occasionally 2-3 times a week My nutrition was somewhat healthy. All I ate was protein and vegetables, no carbs, no fruits and sugar free products. With this challenge my whole life changed. After I started the challenge, I no longer counted calories. The habit of counting calories was very difficult for me to break in the beginning, but I DID IT!! No more weighing my food and counting calories after 5 years! Thank you, Shannon Sinn! This program seriously saved my life! Shannon Sinn, who is very knowledgeable in Fitness and is a Certified Nutrition Coach at Grinder Fitness, came up with a nutrition plan to follow. This taught me how to incorporate protein carbs, fats and fruits in to a proper balanced diet. It was so easy to follow. In the end my Final weight on March 9th, 2024 is -106.4 with body fat %. 17.3.

I have to say, the six weeks were long and hard, working out 6 days a week, lifting 2 to 3 times a week when just starting a workout program. That was a challenge in its self. Now, days I’m noticing my muscular strength and endurance has definitely improved. I cannot be more pleased and proud with my performance and results. I plan on continuing with my fitness journey to the fullest. Also, looking forward to having all of the outstanding support of the coaches at Grinders Fitness! They will always be there for you, if you need anything!

I am also grateful for my fellow Grinders. Some who I’ve known for a very long while, and I have met so many new faces as well. Friendly, down to earth people. Grinders Fitness is a very friendly community! Come on in for a free class, you will not be disappointed!! Start your fitness journey at GRINDERS!

Source: Google

★ 5

The best place ever!!!!!!!!!!!!!!!

Source: Google

★ 5

The BEST workout hands down! Cardio, strength, and mind training rolled into one workout!

Source: Google

★ 5

The best gym ever! I am so thankful I found grinders fitness!

Source: Google

★ 5

I have been looking for a gym for 3 years since moving to CO. After going to a few other places I finally found Grinders! It is exactly what I was looking for! Love the classes and all the coaches are amazing.

Source: Google

★ 5

I came to Grinders to improve my boxing skills and have not been disappointed.

The coaches at Grinders are patient and passionate in developing the skills in beginners. The community is supportive and positive which I love.

The classes are well-structured, varied, and disciplined which I value a lot when choosing a gym. Come check them out!

Source: Google

★ 5

I tried out this gym with my Mom and her Parkinson’s boxing class. I was so impressed with Shannon’s coaching ability and adjusting her teaching to everyone in the class. Thank you Grinder’s Fitness and Shannon! Looking forward to my next class.

Source: Google

★ 5

Source: Google

★ 5

I started working out here a few months ago and I’m completely hooked! The classes at Grinders are challenging and intense, but also really fun and can be adjusted to fit your fitness level. The knowledge, patience, and encouragement of the instructors is amazing, and the community is friendly and supportive. I’ve been working out consistently for years, but attending classes here definitely stepped up my workout game. It is truly the best workout in the best possible environment!

Source: Google

★ 5

Great gym for kickboxing, BJJ and MMA training. The coaches are awesome, the atmosphere is addictive, and the best part of all, the membership is friendly and feels like a family!

Source: Google

★ 5

Grinders is like family. Between the amazing trainers, members and atmosphere, I can’t imagine working out anywhere else! Never worked out somewhere where you get so much encouragement and support. You are only pushed because they know what you’re capable of. Definitely come check it out. You won’t regret it.

Source: Google

★ 5

This is a great gym, I highly recommend it! I’ve been working out here for 5 years, tried other places, but always came back because of the family feel and great atmosphere. The trainers are all friendly and helpful. Whether you are a fighter or just want a great workout, all skill levels are welcome and you can fit in at Grinders.

Source: Google

★ 5

Perfect gym for everyone.

I've been coming to classes for a few months now and never once had a bad experience. I've taken the cardio boxing, technical striking, and bjj classes, and all three have been more than perfect. The coaches are all knowledgeable, friendly, and always push you to do your best. The other students are also always friendly, creating one of the most positive learning environments I've ever seen. Perfect for all levels of experience.

P.S. every class I've taken has been one of the best workouts I've ever had. Intense with breaks when you choose at your own pace.

Source: Google

★ 5

The coaches and other members are
FRIENDLY!
The programs are
ORGANIZED!
And the gym is
CLEAN!
Knowing little about boxing I did the cardio boxing class, the coach Shannon was very inviting and friendly. I did the striking class, the coach made sure I knew what I was doing and praised me along as well... Coaching me! I never felt talked down to or shamed for dowing something incorrectly.
Afterwards I did the BJJ classes, the coach Albert was very knowledgeable, made sure safety was important, the other people practicing were soo helpful and inviting. It really showed the culture this gym keeps, of helping you grow at all levels. 10/10 would recommend!

Source: Google

★ 5

Source: Google

★ 5

This is the real deal!! Started here since 2 weeks and it just feels like family! The atmosphere is so good it makes you wanna push yourself more!! Highly recommend them.

Source: Google

★ 5

Grinders is the best.

Source: Google

★ 5

Great people own this place! You can tell they care about their clients. Not to mention the cutest little pup ever is there once in a while!

Source: Google

★ 5

Awesome workouts!

Source: Google

★ 5

Source: Google

★ 5

Source: Google

★ 5

New to Grindersfitness, but my first few visits have been great.

Staff is very welcoming and highly skilled. Enjoyable vibe for a neophyte like myself and a hard work out to boot.

Will definitely attend regularly.

Source: Google

★ 5

Great place and environment 👌👍

Source: Google

★ 5

So friendly and positive...great coaches and facility.

Source: Google

★ 5

Source: Google

★ 5

Source: Google

★ 5

Great place! Awesome instructors.

Source: Google

★ 5

Source: Google

★ 5

Albert and Shannon are the best coaches ever. Everyone is really nice, and the atmosphere feels like family. <3

Source: Google

★ 5

Source: Google

★ 5

What a great gym! High energetic challenging classes, great trainers And a great family environment.

Source: Google

★ 5

Source: Google

★ 5

Shannon and Albert are amazing ! Each class you take, they take the time to help you and know how to push you to do better. Grinders is the best boxing gym!

Source: Google

★ 5

Great Gym. Went here a while ago just ain't no good at postin reviews this was about 5 months ago so hopefully that speaks for itself thanks for inviting me in amazing instructors and great gym. Thanks for the rolls and training semper fi.

Source: Google

★ 5

Very authentic & knowledgeable staff/owners! They genuinely want to see you succeed in bettering your fighting technique, fitness, or just having fun beating up a bag! Not too crowded, but enough people to roll or spar with!

Source: Google

★ 5

Source: Google

★ 5

Source: Google

★ 5

Source: Google

★ 5

I started working out at Grinders six months ago & from day one I felt at home. The instructors made me feel welcome and really took the time to help me grow as an individual! Since I have been at Grinders, I have lost 35lbs, lost tons of inches, and I have even stepped out of my comfort zone doing Brazilian Jiu Jitsu! Shannon, Albert, Taylor, Angela, and Kurtis are amazing instructors! I love my Grinders family; perhaps you will too!

Source: Google

★ 5

Was in from out of town and looking for a place to workout. I love the boxing and kick boxing workouts and have done them for years. This place is legit and wad a great workout. Thanks for welcoming me in even though it was a one time workout.

Source: Google

★ 5

Source: Google

★ 5

Source: Google

★ 5

Source: Google

★ 5

This gym is amazing and the workout is top knotch! I never leave feeling like I had more to give, and the support and encouragement you get from the trainers is truly genuine. Modification is encouraged as needed based on individual needs and injuries. I was even able to continue these workouts most of my pregnancy thanks to the encouragement to modify and step back as needed.

Source: Google

★ 5

The trainers here truly care and are there to help and educate. The classes are tough and fun at the same time. This place is amazing..you will make friends and get in great shape. I highly recommend!!

Source: Google

★ 5

Best gym around by FAR. Great environment with amazing people, staff and members. You are always pushed to be your best without feeling bad about where you are. You simply can't find a more complete cardio/strengthening workout any where in my opinion. You will NOT be sorry for giving it a shot.

Source: Google

★ 5

Awesome gym regardless of your physical activity level. The instructors are experienced fighters and great at instruction. They break it down to the lowest levels, but also provide moderate to advanced skills. They're super friendly and it's not only am awesome workout, but fun at the same time.

Source: Google

★ 5

This workout will change your life. When I was crippled by a week core that was causing lower back pain I was looking for strength and found it here. The workouts are empowering for your body but also your mind. There is nothing better then being challenged to push yourself and the trainers know how to do that. There is never a shortage of friendly (sweaty) faces and my boys can attend Jiu Jitsu at the same time as my class, a priceless time saver.

Source: Google

★ 5

Looking for a different type of workout? Like boxing, hitting, kicking stuff? Like to burn 500-600 calories in a fast paced hour? Enjoy UFC fights with professional fighters? This gym is for you! FRIENDLY, FAST AND EFFECTIVE! 🥊

Source: Google

★ 5

Source: Google

★ 5

Best cardio ever. Great coaches.

Source: Google

★ 5

This is a must try gym! You are missing out if you haven’t taken a class yet! Check out Grinders Fitness!

Source: Google

★ 5

Grinders is by far the best gym i have had the honor of being a part of. This is a family environment, with real people just trying to be the best they can be. We have been welcomed in and treated like we have always been a part of this family and that is an amazing feeling. Whether your goal is to loose weight, get in shape, train to fight, or just be a part of a great group of people, this is the place to be.

Grinders also offers kids classes. We have 3/4 of our children (the 4th would love to but he is just a toddler) in this class and the amount of hard work, resilience, and fun they have is fantastic!

Come and check Grinders out, there is something for everyone here!

Source: Google

★ 5

If you are looking for an excellent functional workout that you can stick with, this is the place. You'll find an ego-free down-to-earth community that will support you in reaching your personal goals. Chances are, you'll also make a few friends for life.

Source: Google

★ 5

No judgment. The trainers allow you to go at your own pace and also encourage you to push yourself a bit more every round. I cannot say enough positive things about the members and the trainers.

Come find out for yourself!

Source: Google

★ 5

Great place the trainers are very knowledgeable, love that my granddaughter gets to train while the adults get a great workout!!!!

Source: Google

★ 5

If you want a family friendly gym with fast paced workouts, then this is the place for you. You will find all ages training from ages 5 up to early 70's. No one is out of place here. We train everyone from beginners to pro fighters! 1st class is free!!

Source: Google

★ 5

I've been with grinders about 5 months and I was 185 pounds and beginning to be really out of shape after retiring from the military. I now am 169 pounds and feel great and love the grind from Grinders! Best investment of the year!

Source: Google

★ 5

Grinders Fitness is an awesome place. Trainers are extremely efficient, experienced and knowledgeable.Definitely recommended.

Source: Google

★ 5

Absolutely love Grinders Fitness! I've never enjoyed working out until finding this place and these trainers. All skill levels, body types, and personalities are welcome here. Grinders has not only been amazing for my wife and I, but also for our 2 young children ages 10 and 6, who get to learn Jiu Jitsu with Albert during the kids classes. Real fighters as trainers working with you to not only give you a great full body workout but also give you great technical training and advice. The workout is amazing, the people are even better and hey, FREE first class to check it out!

Source: Google

★ 5

This place is awesome! All fitness levels are welcome. Modifications can be made for just about everything. The trainers are very knowledgeable and motivating. If you looking for a new way to relieve stress and get a great workout get in here!!!

Source: Google

★ 5

This gym is a family. They support you, invest in you and push you. The coaches work to make everyone better. This place is like a second home. I love it.

Source: Google

★ 5

Grinders Fitness is my home away from home. Come as you are and enjoy as much support and energy as you can soak in! The staff is beyond knowledgeable and the people that go there are excited to see you every time we share a class together. I've been going to Grinders since the day they opened the doors! I would recommend to anyone, any age, ability, fitness level, military, men, women, children, and more! Everyone will feel welcome here! Whether you are just starting your fitness journey or really need to turn in up a notch. The free trial class is really worth your time!

Source: Google

★ 5

Source: Google

★ 5

Great Results, you really do GRINDE 😍Love this place, GRINDER FITNESS GYM

Source: Google

★ 5

Source: Google

★ 5

This place really is great! Very upbeat and encouraging! They have great trainers and wonderful staff!

Source: Google

★ 5

Needed a challenged so I joined. Never sweated so much in a class. Great instructors and inspirational!

Source: Google

★ 5

Great workout and great people!

Source: Google