The engines will be revving and the fans cheering at Mid-Ohio Sports Car Course when IMSA takes the track for the O'Reilly Auto Parts Four Hours of Mid-Ohio. This action-packed season opening weekend of premier sports car racing features the IMSA Michelin Pilot Challenge. It’s a family friendly weekend at Mid-Ohio Sports Car Course. Kids 12 and under are always admitted free! Get your tickets today!

The 2027 event schedule will be available closer to the event date.

Racing Series

Weathertech SportsCar Championship races through the Mid-Ohio Sports Car Course

From the showroom to the speedway, the IMSA Michelin Pilot Challenge is IMSA’s showcase for the latest in American-made and imported high-performance sports cars, coupes, hatchbacks and sedans. This series is home to the same cars seen on streets and highways around the world and offers racing in two classes – Grand Sport (GS) and Touring Car (TCR) – running a 10-race schedule in tandem with most of the WeatherTech Championship events.

The IMSA VP Racing SportsCar Challenge is a multi-class sprint racing series. The lead class, P3, features entry-level, closed-cockpit prototype cars, while the production-based GSX class utilizes cars built to international GT4 technical regulations. New in 2025 is the GTDX class which uses homologated FIA GT3 specification car models that participated in the 2024 IMSA WeatherTech SportsCar Championship.

The Idemitsu Mazda MX-5 Cup presented by BFGoodrich® Tires is the signature spec series for Mazda Motorsports. Mazda-powered grassroots champions can earn a Mazda scholarship to compete in the series. The Mazda MX-5 Cup champion earns a $250,000 scholarship.

USF Juniors Presented by Continental Tire is the first official step on the USF Pro Championships Presented by Continental Tire driver development system. The series is an entry-level program for young drivers wanting more experience and track time before moving up the ladder and offers its champion a scholarship to advance into USF2000.