Mark your calendar: Grass Lake Traffic Jam'in returns this summer on Friday, July 10 and Saturday, July 11.
The festival has been a downtown anchor for years — live music, food, family-friendly activities, and the kind of street-fair energy that turns Grass Lake into a small city for a weekend.
Lineup, schedule, and parking info usually drop a few weeks before the event. We'll update this post when details are announced — or sign up for the Sunday Roundup and get it in your inbox.
💡
Dates: Friday–Saturday, July 10–11, 2026
Location: Downtown Grass Lake
Format: Music festival, car show, certified 5K run/walk + 1-mile fun run, beer tent, food, family activities. Free admission to the festival itself.
Location: Downtown Grass Lake
Format: Music festival, car show, certified 5K run/walk + 1-mile fun run, beer tent, food, family activities. Free admission to the festival itself.