Welcome to Our Fitness Community.
At our gym, we’re dedicated to helping you become your strongest, healthiest self.
We specialize in personal training, strength and conditioning, and custom fitness programming tailored to your goals.
Whether you prefer one-on-one sessions, group workouts, or training with a friend, our expert coaches will support and motivate you every step of the way.
Join us today and unlock your full potential in a welcoming, results-driven environment.
“Two Locations, One Fitness Community”
We’re proud to serve the Griffith area with two convenient locations — our industrial space, home to high-energy classes and group training, and our 24/7 gym in the main street, offering full access to a modern, fully equipped training floor whenever it suits you.
Fitness Passport Members Welcome
All Fitness Passport members are welcome at Underground Fitness, with full access to our 24/7 gym floor and group training classes.
Whether you’re dropping in for a quick session or joining our community long-term, we’re excited to have you train with us.
Proudly Local. Built for Our Community.
Underground Fitness is a locally owned and operated gym, created by locals who are passionate about fitness and community.
We believe in genuine connections, real support, and helping our members achieve their goals in an environment that feels like home.
When you train with us, you’re not just joining a gym — you’re joining a community that lifts each other up, every step of the way.