Imsa 2025 Schedule Leaked Schedule. Imsa president john doonan said the sanctioning body and its partners have “earned the right” to be in such a strong position to be able to confirm the 2025 weathertech sportscar championship. 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.

In a gathering of stakeholders the day before the mobil 1 12 hours of sebring at sebring international raceway, doonan revealed the slate of races that will make up 2025 events for both imsa’s weathertech and michelin pilot. Imsa shocked both the racing.