CrossFit

Professional coaching. Scaled for every fitness level.

Get stronger. Move better. Build fitness that carries into real life.

Our coached group classes are designed for all experience levels. Every workout can be adjusted to your ability, and you’ll never be left to figure it out alone. We’ll meet you where you are.

No experience required. You do not need to “get in shape first.”

Your first week is free. Tap “Start Here” to claim your free trial.


530-217-3154
G-Theory CrossFit
345 Sacramento Street Unit-G
Auburn, CA 95603 (view larger map)

4.9

34 reviews

Kimberly Dougherty


8 years ago

I am a beginner at crossfit and was a bit scared about how things were going to go for me with it. I LOVE IT! Ginger is a great instructor. She cares about teaching the basics so you learn the proper forms. Everyone that I have met there is suppo

Matthew Smith


8 months ago

I’ve been part of a handful of gyms over the years, and G Theory CrossFit has been the best! The community is amazing, and whether you’re new or experienced, you instantly feel welcomed. It honestly feels like a family, which is something I

Kris Janssen


2 years ago

Coach Ginger, owner of G-Theory, has literally changed my life. As a 66 year old woman, I entered Cross Fit with some trepidation. It didn't look like other gyms. There were no machines plugged into outlets and all around me were weights, barbel

Loren Schneider


6 months ago

G-Theory CrossFit is the kind of gym where you can tell people genuinely care. The coaching is thoughtful and approachable, with clear explanations and intentional scaling options so everyone can train hard at their own level. The workouts are ch

Claudia S


a year ago

I heard about this gym while I was in physical therapy for a shoulder impingement. I quickly learned that it is through exercise and movement that injuries heal - not through non-movement. Ginger and all the excellent coaches provide alternative