Billy Corbett's RetroFit

Fitness from the InsideOut


Hours of Operation

Mon. - Fri:
6am - 7pm

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Billy Corbett's RetroFit Training Center


Welcome to Billy Corbett's Retro Fit Training Center and Sports Performance, where we're committed to enhancing the quality of your life. What makes us different from other training center?

  • RetroFit combines scientifically proven modern training methods with the methods used in the Golden era of strength.
  • Our staff's uncompromising determination to help YOU exceed YOUR expectations.
  • Our clean and comfortable 2,000 square-foot training center located in the heart of Denver
  • Ready to get started? Check out your options in Personal Training, Boot Camps, or Team Training and Youth Sports Conditioning.

What's happening at RetroFIT

Winter is here and with the cold weather comes a new series of classes and fun ways to maintain your fitness throughout this temptation filled season! Shorter days and colder weather often mean moving some of your workouts indoors. No matter your sport, RetroFIT has a training program for you.

This year we have several brand new classes to check out! 

The first is our amazing "SnowFIT Winter Conditioning Class"

and the second program is called "FITGuy Men’s Boot Camp"

Also check out our awesome “RunFIT Running Camp”!


These classes are currently in session, but with our convenient open enrollment system you can join at the beginning of any training week!

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Billy Corbett's RetroFit of Denver - 2538 South Colorado Blvd. (Inside Jazzercise) Denver, CO 80222 - 303 758-3138

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