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Who is Gut Check Fitness?

Gut Check Fitness is led by Joe Decker, recognized as The “World’s Fittest Man” after breaking the Guinness World Records® 24-Hour Physical Fitness Challenge, and 2-time winner of the Death Race.   We were voted “Hardest Workout” by Competitor Magazine. Trailrunner Magazine boasts that we are, “Redefining Hardcore.” Coca Cola’s Fitness Programs calls us “hardcore” and one of the most “creative” workouts in the world.

Do you want to conquer the monotonous boredom of the gym? Are you are tired of playing with bouncy balls and rubber bands?

This is not your granny’s Prancercise class. We provide outdoor group fitness classes that mix running with traditional calisthenic and body weight exercises. We’ll push you harder than you’d push yourself on your own with a supportive and motivational community of like-minded people. Our classes are designed to challenge every athlete, while enjoying a built-in social network of fun-loving people.


Who Should Attend Gut Check Workouts

Gut Check Fitness Racing TeamWe are just ordinary folks doing extraordinary fitness. We are Moms and Dads, office workers, teachers, doctors, plumbers, you name it. We enjoy getting after it, being in the best shape of our lives and running in races. In fact, we won the last three Spartan races that we competed in. So if you are training for a marathon, half marathon, ultra-marathon, Tough Mudder, Spartan Race or just training for life, come join us for a workout – the first one is FREE.


Join us for a workout today!

Check out our Workout Schedule at locations around San Diego.