Marshall County Blueberry Festival

Indiana does a lot of things well in the summertime, but nothing quite matches the scale and warmth of the Marshall County Blueberry Festival in Plymouth. Now in its 60th year, the festival runs Friday through Monday, September 4 through 7, 2026, over Labor Day weekend at Centennial Park on North Michigan Street. What began in 1966 as a modest Jaycees celebration of Marshall County’s blueberry crop — which at the time accounted for roughly one-third of Indiana’s total production — has grown into the state’s largest four-day festival, drawing an estimated 500,000 visitors across the weekend. Admission is free across all four days. Everything happens in the park.

The Festival That Feeds You Blue

Blueberries run the menu. More than 100 food booths occupy the park’s vendor area, and the nonprofit organizations running the best of them have been perfecting their recipes for years. The blueberry donut booth is iconic — people line up before 9 AM on Saturday to get them fresh from the fryer, warm and dusted with sugar — and the blueberry pie, blueberry ice cream, blueberry cheesecake, and blueberry shakes all hold their own. Beyond the namesake fruit, the food court covers the full range of fair standards: corn dogs, steak tips, funnel cakes, and cold beverages. Three entertainment stages run throughout all four days at no additional cost — the Center Stage, Michigan Street Stage, and Amphitheater Stage rotate local and regional acts from morning through evening. The 2026 lineup will be posted at blueberryfestival.org as the summer progresses. The Hoosier Old Wheels Antique Car Show is a perennial crowd-pleaser across the weekend, and sports tournaments — softball, volleyball, pickleball, and corn hole — run daily for participants and spectators.

Fireworks, Balloons, and the Big Parade

Sunday evening is the festival’s visual peak: the hot air balloon glow — similar to a night glow at smaller events, but larger — lights up the park sky just before the fireworks display, which reliably draws one of the weekend’s largest gathering crowds to the park perimeter. Arrive by 6 PM for a good lawn position. Monday morning brings the Labor Day Parade along Jefferson Street, one of Plymouth’s best-attended annual events: more than 100 units participate, including high school marching bands from across Marshall County, floats, and community vehicles, with nearly 20,000 spectators lining the route. The Blueberry Stomp 5K and 15K run on Monday morning as well, followed immediately by the Blueberry Bicycle Cruise for cyclists who registered in advance. Monday is the most logistically full day of the weekend and arguably the most rewarding for families who want structure.

Logistics for a Long Weekend

Free-admission does not mean low-cost — food, beverages, carnival rides, and crafts add up across four days, so budget accordingly. Parking is available at Plymouth High School on the west side of the city, with a free round-trip tram service running continuously to and from the Centennial Park grounds. Handicap parking is also routed through the High School. Look for Blueberry Parking signage along US Routes 30 and 31 approaching Plymouth. Strollers navigate the paved paths around the park well; the lawn areas are mixed grass and packed gravel in the high-traffic zones. Leashed dogs are welcome on the outdoor grounds in most areas. Early September in northern Indiana averages around 75 to 80 Fahrenheit during the day, with cooler evenings — bring a light layer for the Sunday night fireworks.

If You’re Going with Kids
The carnival midway runs all four days and is scaled for all ages, from toddler rides to teenage thrill options. The kids’ pedal tractor pull and face-painting stations are scheduled activities worth tracking on the festival schedule. The blueberry donut line is non-negotiable — it is genuinely one of the better pieces of festival food in the Midwest.

Stake Out a Lake Base on Lake.com

Plymouth sits at the center of Marshall County’s lake district — Lake of the Woods, Maxinkuckee, Twin Lakes, and Center Lake are all within fifteen minutes of the festival grounds. These are quiet, family-oriented Indiana lakes with good fishing, boat rentals, and a range of waterfront rental homes that suit groups of all sizes. Search Marshall County and Culver-area options on Lake.com. Booking two to three months in advance is strongly advised for Labor Day weekend.