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About RMFF

At Rocky Mountain Flex Fitness, we have a passion for helping all people achieve their goals, whatever they may be, and are uniquely qualified with knowledge in over 20 different health and lifestyle disciplines.

Train with True Athletes:

At Rocky Mountain Flex Fitness, we offer training programs with some of the top professionals and competitors in the country. We hold all of our trainers to the highest standards to ensure they can help you achieve the results you desire!

Fred Zardoshtian

I didn’t  know how great I could feel until I joined RMFF. Since joining I have lost weight, increased muscle, gained energy and focus all while making new friends. Every gym has weights, very few have a community to help you lift them.

Jillian Jones – Fit4Mom

We had an amazing experience at RMFF.  From their staff to their gym members, everyone was always so warm and welcoming to our mamas. Their front desk staff is amazing and was always willing to help hold the door open for us (which is huge considering we are trying to get through the doorway with a stroller!).  Great equipment, space, and overall morale!

Ches Arms

RMFF is the most friendly & inclusive, best outfitted, and least crowded gym I’ve ever had the pleasure of being a part of. It’s become like a second home.

Not only do they have every piece of equipment you can imagine (plus some you never knew existed), every single employee and trainer is out on the floor using them – leading by example.

Every time I’ve thought I might feel uncomfortable, there’s been a friendly face, ready to show me the ropes, excited to see someone trying something new.

I love this place so much, I actually posted this review, deleted it, then posted it again, just so I could give them 5 stars twice.

Michele Crook

I love this place! The staff is always friendly and the place is always clean. After being stuck in a couple different gym chains since moving here it’s great to find a place that has a feeling of positivity and community.

Eric Vlosky

I’ve been going here for about 7 months now and it’s a good gym. They have a lot of equipment and plenty of space. It is only busy during rush hours, and even then it’s manageable compared to other places I’ve been (5-6 ish). There are a lot of personal trainers of all varieties that operate out of RMFF as well so if you’re into that it’s a good place for training. Definitely a solid gym with a nice staff that keeps the place clean. Not much more to be asked for.

Maria Hernandez

The absolute best gym in Denver! They always keep the gym clean, the staff is super friendly, and everything is always stocked. LOVE coming here.

Lisa Anne

Love this gym! Great environment and supportive of all fitness goals! Top of the line equipment and always clean! The boxing and muy tai classes on Tuesday / Thursday’s can’t be beat!

Llogan Fishbaugh

Clean Gym! Staff super knowledgeable and very nice. GREAT! Deals!. if your looking for a gym this is the one!

Stephanie Gaitens

I’ve been lifting here with my trainer Charis for around 6 mos & love it! The staff is super supportive and friendly, and the equipment is up to date & clean. Not too busy that you are waiting around, but good energy. Also, great coffee shop right next door 🙂

David Anderson

I love this gym. Clean, lots of equipment, experienced personal trainers, and a friendly community. I recommend this gym to anyone who wants to take their fitness to the next level!

Samuel Hickey

Great staff and plenty of equipment to bust out a tough workout of any kind. Veteran friendly.

Darren Moyer

Best place to workout in Denver, plenty of equipment, awesome staff, phenomenal trainers, if your serious about fitness and taking it to the next level RMF is where it’s at!!

Unleash Your Inner Warrior:

Whether you lean towards dominating in the weight room, getting your zen on in a candlelit yoga session, or unleashing the beast with a ferocious round of heart pounding kickboxing, we offer these and many other free classes with your membership to help compliment your fitness journey.

900 w. 1st Ave. Unit 170 Denver, CO 80223
(720) 550-6347

Hours of Operation

– All Classes: 5:00 a.m. – 10:00 p.m.
– All Classes: 5:00 a.m. – 10:00 p.m.
W – All Classes 5:00 a.m. – 10:00 p.m.
Th – Al Classes 5:00 a.m. – 10:00 p.m.
Fr – All Classes 5:00 a.m. – 08:00 p.m.
Sat – All Classes 7:00 a.m. – 5:00 p.m.
Su – All Classes 7:00 a.m. – 04:00 p.m.

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