NASCAR will bring back its five-race In-Season Challenge in 2026, returning a midyear jolt of stakes to the regular-season Cup schedule.

NASCAR introduced another innovative national series schedule as the 2026 slates were announced for the NASCAR Cup Series, NASCAR O’Reilly Auto Parts Series (formerly NASCAR Xfinity Series) and NASCAR ...

BROOKLYN, MI – NASCAR will return to Michigan International Speedway in early June again next year, as the series announced its full 2026 schedule on Wednesday, Aug. 20.