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

36 reviews

Loren Schneider


8 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

Lorie Pinion


3 months ago

When you think of CrossFit you probably don't immediately think of a 40 year old soccer mom, I know I didn't. So when I won a free trial month for G-Theory at a Bingo fundraiser (is that not the most 40 year old thing you've ever heard?!) I thoug

Matthew Smith


10 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

GregAcq


a month ago

Casey, Dave and crew are all awesome coaches. Workout programming is next level and the gym community is friendly and supportive. Benchmark set!

Angela Acquistapace


a month ago

Coaching is phenomenal. Class sizes are small enough for individual help but large enough to be fun. Members are welcoming and encouraging. Programing is well planned and challenging for all levels.