The Grindhouse

The Grindhouse is a martial arts gym in Billings that teaches jiu jitsu, Muay Thai, boxing and MMA. Kids start at age four with self-defense fundamentals and lessons in goal setting, teamwork and respect. Adults can train gi and no-gi jiu jitsu, and the MMA program is built for students aiming to compete, with a long list of championships across several promotions.

Head coach and founder Will Grundhauser leads the jiu jitsu program. New students can start with a free trial class, and open mat runs every day at lunchtime. A monthly membership covers every class on the schedule, drop-ins are welcome for visitors and travelers, and family packages are available. Gis, shorts, rash guards and gloves are sold at the front desk.