NASCAR O'Reilly Auto Parts Series

Season Description
The 2026 NASCAR O'Reilly Auto Parts Series is the 45th season of the NASCAR O'Reilly Auto Parts Series, a stock car racing series sanctioned by NASCAR in the United States. The season started on February 14 with the United Rentals 300 at Daytona International Speedway and will end with the Hard Rock Bet 300 at Homestead–Miami Speedway on November 7.

Jesse Love of Richard Childress Racing enters the season as the 2025 NASCAR Xfinity Series champion.

This will be the first year under the new title sponsor, O'Reilly Auto Parts, as Xfinity did not extend their sponsorship.

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