Train Hard.
Have Fun.
Get Results.
Windsor & Berthoud's premier high-energy gym where team workouts meet personal attention.
Fitness is personal—even in a group setting. We bring the energy of a team workout together with the focus of one-on-one training.
Featured Classes
45-60 minute workouts combining cardio intervals and strength training with heart rate monitoring.
RedLine HIIT
Our signature high-intensity interval training pushing your cardiovascular limits through escalating work periods.
Grit Classes
Build strength and muscle with compound lifts, accessories, and a hard cardio finish.
HYROX Training
Structured fitness combining running and functional workout stations for the ultimate race prep.
2
Locations
11+
Class Types
6
Expert Coaches
1
Community
The RedZone Community
More than a gym—we're a family that pushes each other to be better every day.
Coaches Who Care About Your Success
Our passionate coaches believe fitness should be fun, focused, and judgment-free. They meet you where you are and help you get stronger every week—whether you're new to fitness or chasing new goals.
Greg Osborne
Owner & Coach
Suzannah Mattson
Owner
Matt Wagner
Coach (Strong Man)
Candace Covington
Coach (Pro Athlete)
Premium Amenities
Everything you need to train, recover, and thrive.
Infrared Sauna
Deep heat therapy for recovery
Windsor
Cold Plunge
Ice bath recovery therapy
Windsor
Childcare
Kids cared for during classes
Select classes
Open Gym
Train on your own schedule
Both locations
Ready to Join the RedZone?
No judgment. No ego. Just a community that wants to see you succeed.
Get Started Today