Imsa Calendar 2025. Imsa just released their 2025 schedule, 2025 imsa weathertech sportscar championship schedule: Imsa president john doonan revealed the slate of races that will make up the 2025 schedules for the weathertech championship and the imsa michelin pilot challenge.
Imsa sportscar championship has released its calendar for 2025. The imsa weathertech sportscar championship is hosting its second race of the 2024 season on saturday at sebring international raceway.