Functional Fitness. Real Results.


F45 TRAINING GREEN MOUNTAIN offers functional group fitness classes, reimagined. We are more than just a gym. We are the total wellness solution for every body. With 5,000+ dynamic, energy-packed movements and over 80 workouts offered, we help you unlock your inner athlete. We are the workout you always wanted with the team you didn’t know you needed. New to F45 Training?

Team Training. Life Changing.


Mark Wahlberg said it best: It’s not about mirrors, mood lights or followers. It’s about what you did with your time. It’s about how you feel when you are finished and who encouraged you along the way. Ready to join the movement?

Team Training. Life Changing.


F45 Training is functional group fitness, with the effectiveness and attention of a certified personal trainer. Our workouts are designed for every body. Join us to find out why we are rated #1 Gym by Men’s Journal in the US and Canstar Blue in Australia.


Class Schedule

Experience the power of F45 GREEN MOUNTAIN today and start feeling the difference today.



After 3 years and 500+ classes into F45, my mental and physical health have drastically improved.
My focus is building stamina and endurance to combat multiple sclerosis. I’m 61 and in the best shape of my life.
I’ve lost 187 lbs since my very first workout in 2021. F45 has become the most joyful place in my life.
Through F45, I have lost 13 lbs of fat, gained 4 lbs of muscle and descreased my body fat by 6%.
Three years ago I got cancer. It was my F45 family and friendships that got me through it. My team is always there for me.


Awesome gym! Fun and challenging classes with great trainers and a welcoming, enjoyable and clean environment. Whether you’re the competitive type or not, it doesn’t matter, you’re going to train hard and laugh with the other members. Would and do recommend!
Matthew R.
Lakewood, CO
I absolutely love F45 green mountain and the F45 workouts as a whole. Prior to working out here I did not go to the gym for many years. I was weak, skinny, and out of shape. I have been attending regularly 5-6x a week since its opening weekend. In that time, I have put on just under 20lbs of lean muscle, my physical endurance has increased dramatically, and I feel much healthier overall. This gym and its trainers are full of energy. There is a strong sense of community and comradery amongst the members and the staff that makes it a joy to come workout at F45 Green Mountain each time I attend. I’ve gained strength, speed, athleticism, flexibility, and for the first time in my life I enjoy working out!
Christopher D.
Lakewood, CO
This F45 location and its community are unmatched! The coaches have helped me regain strength in my knee after a snowboarding injury and I truly don’t think I would be at the strength I am now without them. The coaches meet you where you are at and then support & push you to reach the next level. The community that attends F45 is very welcoming too, I’ve never felt shy heading into a class. Overall awesome fitness community to be a part of and I am thankful I found them when I did!
Madison W.
Lakewood, CO
The workouts are outstanding and coach’s are great! We joined when they first opened up with a trial membership, but my wife had to have knee surgery so we delayed the trial for months. Everyone was so kind, supportive and understanding. Now they take the time to offer alternatives for her when necessary. Couldn’t ask for a better community.
Edgar C.
Lakewood, CO
This gym is the best!! The coaches are so amazing, and helped me with my form and nutrition since starting and I’ve never seen as much progress as I have since joining. I feel so strong mentally and physically and am so excited to keep going! Love it so much! 10/10 recommend coming here if you want to see amazing results and feel great!!
Rachael S.
Lakewood, CO
I’m on the first week trial at F45 GM and feel like I finally found my place! I tried yoga studios and cycling studios in the area and never felt at home. As a yoga instructor, I was nervous to try my first fitness class that wasn’t on a bike or on a yoga mat. I feel totally at home here! The instructors truly care about your form, safety, and happiness throughout class. Modifications are provided and encouraged. F45 is an inclusive and welcoming environment for all skill levels. I highly recommend stopping in and signing up for the 7 day trial. I’m only 2 days in and am already fully integrating F45 into my daily workout routine.
Kiersten G.
Lakewood, CO
I absolutely love this gym, the coaches, and the community! I have been an athlete for many many years and have done just about everything from long-distance running to heavy weightlifting and CrossFit. Since joining this gym I have seen an improvement in my cardio, endurance, mobility, and strength as a well-rounded athlete. I especially appreciate everything Chris and Brooke have done to make this gym as supportive and special as it is!
Sarah D.
Lakewood, CO
Such a fantastic and welcoming environment. The coaches are super motivational and the facility is always clean. Absolutely love being a member at F45 Green Mountain. 10/10 recommend to those looking to get their sweat on in under an hour.
Joe W.
Lakewood, CO
I just completed my first month and I love it here!! They always have 2 coaches on the floor making sure you’re doing the exercises correctly and to assist with any alternates if needed! Motivating and respectful place all the way around! Inviting for all levels!
Cindy C.
Lakewood, CO
Great experience at f45 Green Mountain. The environment is welcoming and is very fast paced. No workout is ever the same. I love the mixture of strength and cardio and “45”minute workouts. The coaches are very attentive to everyone throughout the whole work out.
Kathleen J.
Lakewood, CO
I am 8wks post-op major abdominal surgery and was scared/nervous about returning to the gym for the first time, BUT all the trainers made me feel safe by helping me with adjusting the workout to meet my needs. Chris (owner) has done an amazing job hiring only the BEST trainers. Please don’t hesitate to come in to the gym no matter what your fitness level is because they will encourage you safely to becoming your BEST SELF! Come check it out and be amazed like I am! 🙂
Tina B.
Lakewood, CO
This gym is absolutely amazing! I moved here from Pittsburgh and wasn’t sure what to expect. The coaches and members are very inviting and the coaches do a great job of providing support throughout the workout. I am so glad that F45 Green Mountain opened their location!!!!
Maddy M.
Lakewood, CO
Absolutely love this place! The community that this place has is unbelievable. It’s great to be motivated and encouraged by fellow gym goers and the workouts are intense and change daily. Since I’ve been coming to classes, I have noticed significant strength improvement and increased speed and agility. Highly recommend to anyone that is training for any sport, active lifestyle, or looking to get in the best shape of their life!
Greg B.
Lakewood, CO
This place is amazing! Great workouts, great coaches, great atmosphere! You will get strong in places you didn’t know existed. Be ready to be pushed, and be ready for results. Also, be ready to buy pants with a smaller waist size.
Andrew SP.
Lakewood, CO
Absolutely loved my time at f45 green mountain! Having two trainers with high energy each class makes all the difference. Would highly recommend to any of my friends and family!
Emma W.
Lakewood, CO
After trying other gyms or crossfit, F45 was the perfect fit for me and my schedule. The trainers and other member are great to be around.
Lance C.
Lakewood, CO
I love the class structure, coaches, fellow participants and the playlists. The workout is challenging but in a good way, I always look forward to my workouts at F45 Green mountain.
Amanda S.
Lakewood, CO
Fantastic workout! I love that the workouts can be modified to your fitness level. I have been working out consistently for >10 years and find the workouts to be challenging, effective, and fun! I initially thought 45 minutes wouldn’t be long enough for a good workout, but I have been burning as much (or more) than my hour long workouts. Most importantly, the workouts focus on functional fitness – so not only can you lose weight while getting stronger, but you feel like a more capable, athletic person. The coaches are amazing, they emphasize proper form and keep you motivated throughout the whole workout! Love this place!
Nazanin K.
Lakewood, CO


F45 trainers are in a league of their own, delivering the expert guidance and unconditional support of a one-on-one personal trainer. Get to know the F45 trainers near you before your next F45 class.

Morgan Mitchell
F45 Athlete
Scott Thompson
F45 Global Athletics Director
Johry Batt
Deputy Athletics Director
Cristina Chan
F45 Recovery Director
Juddy Ferguson
F45 Athletics Educator
Noah Galloway
F45 Athlete