Trainers in Boulder

“I attended this gym for a few years before leaving to mix things up a bit, but now I've started up again at Core Progression recently, and it's just as good as ever. The staff are all super friendly, very knowledgeable, and just plain great to work with. If you're looking for training that's catered to your needs and your goals, this is a great spot.“

“Loved this F45 location and workout! Drew was awesome and had a fun class. He was helpful in showing me how to adjust my form for moves as well.“

“I come to this location when I travel for business. Facilities are great, staff is very helpful and the equipment is in good order.“

“I’m 66 and have been training with Brenna at KoaFit for three years now. What makes her exceptional is that she deeply understands how bodies work—and she isn’t superficial or trendy about it. She’s serious about her profession, regularly investing in her continuing education. She combines that rigor with warmth and encouragement.

Brenna builds precise, customized fitness plans for me—also for my at-home training days—so I never lose momentum. She zeros in on core imbalances, tailors progressions, and pushes me in places I don’t think I can go. After a lifetime of hard sport, I was dealing with muscular and bone deterioration I’d resigned myself to. But under her guidance, I’ve grown stronger, steadier, and even reversed damage I thought was permanent.

The studio vibe is just right: upbeat, supportive, friendly, and never judgmental. If you want training rooted in science but delivered with heart, Brenna at KoaFit is the real deal.“

“I've had an amazing journey working with Ross! His deep knowledge of exercise science and body biomechanics is exceptional, and his keen eye for detail makes all the difference—especially when it comes to problem-solving long-standing movement patterns.

As a Chiropractor with extensive experience in personal training and physical therapy, I came in with a solid foundation of knowledge—yet Ross continually expands my understanding. I learn something new in every session, and I always leave feeling inspired and better equipped in my own work.

If you're considering working with Ross, I can confidently say: you will not be disappointed.“

“I've used over a dozen various trainers in Boulder County. Matt H & Petra are by far the best trainers from the bunch. I would highly recommend them for anyone looking for results.“

“Sam Iannetta owner and personal trainer is fantastic especially at resolving old or new injuries. His understanding of body mechanics is exceptional. He helped me prepare for an L4-L5 fusion and my recovery. I have had a really fast recovery as a result.“