9714 N 7th St, Phoenix, Arizona 85020
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63 Day Transformation Program in Phoenix

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Our High-Energy Bootcamps in Phoenix Can Help You See Results Fast!

What could be better than a heart-racing workout that keeps your muscles moving and pushes you to stay motivated week after week?

In our Bootcamp Classes in Phoenix, we're not trying to lift the most weight or see who can do the most reps. We're pushing you to move your body more efficiently and complete each exercise with a combination of speed, safety, and sustainability.

You'll have a blast challenging yourself to get better every week and you'll see the results in no time. Join us in Phoenix and check it out for yourself!

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The 63 Day Transformation at Underground Fitness Have Something For Everyone!

That's the true beauty of our training - every workout is scalable to meet your unique skill level. If you're a complete beginner, we'll start with the basics. And if you're coming to us with some experience we'll work hard to make sure you're challenged every class. 

Our Training in Phoenix enables men and women of all abilities to train alongside one another - working toward the common goal of improved performance.

In no time, you can take on: 

  • Sustainable fat burn and muscle toning
  • Boosted cardiovascular health
  • Improved speed, strength, and agility
  • An incredible sense of accomplishment after every class

From Day One, We're Here To Keep You Motivated Like Never Before

Did we mention that our 63 Day Transformation is high-energy fun? They truly take your mind off how hard you're working, helping you focus instead on moving your body faster than you did last week.

We maintain a laid-back environment where everyone can thrive. And we offer convenient scheduling with 6 am and 6 pm classes nearly every day of the week!

Join us in Phoenix and enjoy:

  • Innovative workout routines
  • Hands-on instruction and support
  • Revolutionary fitness resources
  • Boosted self-confidence from the get-go

Ready To Get Started? Take On The Best Fitness Classes In Phoenix Today!

Don't feel stuck in a boring routine. Challenge your body and stay motivated with every class at Underground Fitness. We're proud to help men and women of all abilities find success and you could be next.

Just fill out the short form on your screen to learn more about our Bootcamp Classes and everything we have to offer in Phoenix!

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Our Fitness Bootcamps Classes Are Located In

  • Central-North Phoenix
  • Arrowhead-Glendale
  • Desert Ridge-North Scottsdale

Be the Hero of Your Own Story With Underground Fitness!

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Fitness near Phoenix

Carl Newsome

I, like most overweight people, have tried EVERY DIET imaginable with very little success. After years of battles and struggling, my weight reached my all-time high of 425 lbs in 2020 and I felt absolutely sick. I decided I had to do something. Much like everyone does, I cut out some foods and started light cardio. I started losing weight almost immediately! The first 50 lbs melted away pretty quickly, but then I plateaued. I was stuck. I started counting calories and adding more movement with no success. Luckily, I saw an ad on social media for Underground Fitness. That is where I met Gavino and Tripp. Both are excellent trainers. From day one, they pushed me and kept me accountable. Today, I weigh 235 lbs and I am still losing weight steadily. We have adjusted my goals and constantly adjust my strength training to push my limits and continue to make gains! My next goal is to break that 200 lb mark, and I feel confident that I will achieve that with Underground Fitness. Here, I’m not just a barcode that comes and goes. If I don’t show, Gavino is calling or texting me. He pushes when I need him to and doesn’t allow any excuses! That’s what has worked for me, and I have been able to stick with it for this long. I can’t say that about any other workout regiment or gym membership!
Fitness near Phoenix

Robbi Laker-Tall

I was the 73 year old, sedentary, frail widow who decided it wasn’t too late to make a major change in my lifestyle. I spent months investigating gyms, yoga studios, different modes of exercise programs and finally found a trusted connection. Tucked in the southwest corner of 7th St & Mountain View is a petite building that houses Underground Fitness. Yes, good things come in small packages and even better are the big results from their expertise. My trainer, Roxie, does more than just instruct, she demonstrates and explains each exercise. I feel safe as she optimistically cheerleads me through activities using a wide variety of equipment. Even my friends have noticed my improved endurance, stamina, and toning. Underground Fitness is my get-fit., feels like home, personal gym. I’m optimistic about reaching my goals and setting new ones.

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