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IMSA eyes Pacific Northwest and potential NASCAR tie-ins as part of 2028 calendar expansion

IMSA President John Doonan is laying the groundwork for the next major evolution of the WeatherTech SportsCar Championship calendar, eyeing 2028 as a target for fresh venues, potential street races, and deeper collaborations with NASCAR.Doonan has made his strongest remarks…

By Joey Barnes · Motorsport.com

Published: Wednesday, 7 October 2026 at 3:40 PM

Key Things to Know

IMSA is targeting 2028 for calendar expansion, exploring the Pacific Northwest, street circuits, and NASCAR partnerships.
President John Doonan confirmed track rotations are being considered to manage team operational budgets.
IMSA could send support series like the Michelin Pilot Challenge to certain joint NASCAR marquee events.

The Story in 60 Seconds

IMSA President John Doonan is targeting 2028 for a major expansion of the WeatherTech SportsCar Championship calendar. Potential plans include introducing street circuits, expanding into the Pacific Northwest, and staging joint events with NASCAR, such as military base races or metropolitan street courses.

To balance paddock budgets while reaching new audiences, Doonan noted that a multi-year track rotation schedule is actively being considered. The full 2028 calendar is expected to be officially unveiled around the Mobil 1 Twelve Hours of Sebring in March.

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IMSA eyes Pacific Northwest and potential NASCAR tie-ins as part of 2028 calendar expansion

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