Treadfit Lemont

Treadfit Lemont runs small group workouts that mix interval training on the treadmill with full-body strength work, led by certified instructors. Classes are built to suit walkers, joggers and hardcore runners alike, and the site says each session burns roughly 400 to 800 calories. Classes are open to adults and teens ages 18 and older.

New visitors can start with a free seven-day trial, and class packs and monthly or yearly memberships are available, with discounted rates for students and first responders and military. Most instructors are ACE certified, and the studio is part of the Treadfit chain, which also has locations in Beverly and Palos Heights. The studio is at 1056 State Street in Lemont.