2025 Imsa Schedule. Imsa has confirmed the 2025 weathertech sportscar championship schedule, some five months ahead of its traditional release date, featuring an unchanged calendar to this year. 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.

While many truck teams remain unannounced for. 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.