Rocky Mountain Flex Fitness

Rocky Mountain Flex Fitness

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Rocky Mountain Flex Fitness - Denver gym since 2015 with personal training and group classes 💪

Rocky Mountain Flex Fitness was started in November of 2015 with 2 guys and a shared dream to change the way people see fitness, and offer the solution to the most difficult, frequent, challenging, and interesting questions people have about how to become healthy and fit. We have a passion for helping all people achieve their goals, whatever they may be, and are uniquely qualified with knowledge i

09/02/2026

Labor Day hours and class updates 🇺🇸

Rocky Mountain Flex will be open from 7 AM–2 PM on Monday, September 7th.

Please note these class changes for the holiday:

• Britt’s Functional Turf class will start at 7 AM instead of 6:30 AM
• Evening Yoga will be canceled

We hope everyone has a relaxing Labor Day!

08/31/2026

RMFLEX Members Please Note: Tuesday, September 1st, the north parking lot entrance will be closed for an event from 5–9 PM. Please use the south entrance, located by Smokin’ Yards. Please help spread the word!

08/28/2026

Please note: Handstand + Mobility Class will not be in session on Tuesday, September 1st.

Jess’ class will return Tuesday, September 8th. We hope to see you then! 🤸 inverted.moments

08/27/2026

Please note that we have closed early due to an unexpected power outage from Xcel Energy. As of 7:45 PM on Wednesday, August 26th, we are closed. Thanks for understanding and we hope to see you tomorrow!

Photos from Rocky Mountain Flex Fitness's post 08/25/2026

RMFLEX Trainer Spotlight: Tom Terwilliger 🏆Performance Longevity Strategist.

We wanted to give a shoutout to longtime RMFLEX trainer Tom Terwilliger, who has been with us since the beginning.

Tom was recently named Mindset Coach of the Year by the Federation of Israeli Martial Arts (FIMA) and inducted into the United States Martial Arts Hall of Fame.

A former national bodybuilding champion and Mr. America titleholder, Tom also competed twice in the prestigious Mr. Olympia competition. Beyond bodybuilding, he holds a 1st Sash in Kung Fu and has been a longtime student of Kali, Pencak Silat and Jeet Kune Do under Sifu Ray Kahn and Guru Dan Inosanto.

Known as The Achievement Mentor, Tom is also a #1 bestselling author, international speaker and leading authority on the science of achievement. For more than 30 years, he has advocated for fitness, healthy living, mindset, and peak performance.

At 67, Tom remains active in the health, fitness, and martial arts communities while helping others pursue greater strength, health, and personal achievement.

Congratulations, Tom, on these two well-deserved honors!

Photos from Rocky Mountain Flex Fitness's post 08/19/2026

Coach Britt’s Monday morning crew has been showing up the last several weeks!💪

Her Hybrid Training classes on the turf are 60-minute sessions that combine strength and conditioning with cardio intervals to build strength, endurance, and stamina.

It’s a great class if you’re training for HYROX this fall or if you want to challenge yourself and switch up your training. Every exercise can be scaled to your fitness level.

Join Coach Britt Brittney Sotherden every Monday at 6:30 am. RMFLEX members, no sign-up needed, just show up! ClassPass members can reserve a spot through the app. 👊

08/14/2026

Please note: there will be no Handstand Class this Tuesday, August 18th.

Handstand Class will return the following week on Tuesday, August 25th.

And while you’re marking your calendar, there will also be no class on Tuesday, September 1st.

We’ll see you back for Handstand and Mobility with Jess at RMFLEX on August 25th! 🤸 inverted.moments

08/12/2026

Andy casually pulled 846 lbs at the 5th Annual Sunday Paper Classic on August 1st. 😮‍💨

And since August is Staff Appreciation Month at RMFLEX, this is your reminder to show our front desk crew some love too. We set up a Buy Me a Coffee page aka buy them a protein shake. If you’d like to contribute, everything is pooled and split among the front desk staff, and you can include a note with your gift. Link in bio.

No pressure to give, though. A kind word or quick thank you at the front desk means a lot too.

Big congrats, Andy. 👏

Photos from Rocky Mountain Flex Fitness's post 08/08/2026

New on the blog: Back in the spring of 2024, we interviewed RMFLEX’s very own Alex Bath after she had already gone through a significant body recomposition and an incredible transformation, both physically and mentally.

At the time, Alex talked about building confidence, staying consistent, getting stronger, and a goal that was still somewhere down the road: competing in a bodybuilding show.

Fast forward over two years, and she’s officially stepped on that stage! 💪 And her transformation has continued to reach an entirely new level.

We caught up with Alex for Part 2 to talk about how far she’s come, her first bodybuilding show, and the goals she’s already working toward next.

A huge congratulations to Alex Bath, and thank you for continuing to share your journey with the RMFLEX community! 💪

Read Part 2 on the RMFLEX blog. 🔗 https://rmflex.com/alex-bath-two-years-later/

08/05/2026

Here’s the latest RMFLEX group class schedule!

Current weekly lineup:
• Monday 6:30 AM: Hybrid/Hyrox
• Monday 6:30 PM: Yoga Chi Flow
• Tuesday 6:30 AM: Pilates HIIT
• Tuesday 6:30 PM: Handstand + Mobility
• Wednesday 6:30 AM: Mile High HIIT
• Thursday 6:30 AM: Pilates HIIT
• Thursday 6:30 PM: Yoga Chi Flow

All our classes are designed to help you move better, get stronger, and stay consistent.💪

Save this schedule, grab a friend, and we’ll see you in class!

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Location

Telephone

Address


900 W 1st Avenue Unit 150
Denver, CO
80223

Opening Hours

Monday 5am - 10pm
Tuesday 5am - 10pm
Wednesday 5am - 10pm
Thursday 5am - 10pm
Friday 5am - 8pm
Saturday 7am - 5pm
Sunday 7am - 5pm