CrossFit Undeniable

CrossFit Undeniable Our mission is to build a community of healthy, happy individuals that can thrive into their 90’s and beyond.
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Flatirons CrossFit is a premier CrossFit and training facility in Westminster, Colorado designed to help you reach your goals in a friendly, safe environment.

What a day! Between all the hard work at 25.2 including a number of PRs, first plull-ups, and first muscle-ups, and some...
03/09/2025

What a day! Between all the hard work at 25.2 including a number of PRs, first plull-ups, and first muscle-ups, and some stiff competition for best Team Photo at our 2nd week of the Intramural Open. I’m declaring the team photo event a tie (how can we choose between these two; they’re both outstanding!), however, The CrossFit Pictionary comp was also a close race, but Team Guns N Barbells came back from an early deficit to edge out Team Living The Dream at the last minute. Looks like it’s gonna come down to a final push at next week’s Friday Night Lights! Good luck y’all! Thanks for being you!! 💪🏼🫡❤️

Happy Memorial Day weekend, CFU! Great job on Murph yesterday! 💪🏼
05/27/2024

Happy Memorial Day weekend, CFU! Great job on Murph yesterday! 💪🏼

02/11/2024
Less than 24 hours! Everyone is welcome, no matter your skill level. Hope to see you there!
10/14/2023

Less than 24 hours! Everyone is welcome, no matter your skill level. Hope to see you there!

Come join us in a great cause! Everyone is welcome, no matter your skill level or ability. Hope to see you there!

Fall / Holiday Schedule @ CFU!
10/07/2023

Fall / Holiday Schedule @ CFU!

Come join us in a great cause! Everyone is welcome, no matter your skill level or ability. Hope to see you there!
10/03/2023

Come join us in a great cause! Everyone is welcome, no matter your skill level or ability. Hope to see you there!

10/02/2023
Great job today, CFU Crew! It was so cool to see you all get after it on such an important WOD. Thank you for being your...
05/27/2023

Great job today, CFU Crew! It was so cool to see you all get after it on such an important WOD. Thank you for being your badass selves! 💪🏼

I’ve got a disease, and the only cure is more barbell…
05/11/2023

I’ve got a disease, and the only cure is more barbell…

Check out that depth! 🤩
05/02/2023

Check out that depth! 🤩

Did you know that incorporating mobility exercises into your CrossFit routine can improve your overall fitness and preve...
04/27/2023

Did you know that incorporating mobility exercises into your CrossFit routine can improve your overall fitness and prevent injuries? Mobility work is essential for maintaining and increasing your range of motion, which translates to better performance during workouts and everyday activities. Our gym offers a variety of mobility exercises and stretches that can help you improve your flexibility and reduce the risk of injury. Whether you're a seasoned athlete or just starting out, making mobility training a part of your routine is a smart move for your fitness journey. Stay healthy and injury-free, sta strong for life!

Address

8861 Harlan Street
Westminster, CO
80031

Opening Hours

Monday 5am - 7pm
Tuesday 5am - 6:30pm
Wednesday 5am - 6:30pm
Thursday 5am - 6:30pm
Friday 5am - 6:30pm
Saturday 8am - 11am

Telephone

+17205053607

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