2025 Imsa Calendar. The season will consist of 11 rounds, including five races which form. Imsa has announced its calendar for the 2025 imsa weathertech sportscar championship during this weekend’s 12 hours of sebring.
Watkins glen , ny 14891. 2025 imsa weathertech sportscar championship the 2025 season will open in daytona beach, florida with the 63rd rolex 24 at daytona on the weekend of jan.