A Revamped 2026 Calendar
The 2026 NASCAR Cup Series In‑Season Challenge begins on June 28, when the Toyota Save Mart 350 rolls out of Sonoma Raceway for a live broadcast on TNT at 3:30 p.m. ET.
Key Venues and First‑Time Moments
After Sonoma, the schedule moves to Chicagoland Speedway, which returns after a COVID‑19 hiatus, before heading to Atlanta Motor Speedway, now shifted back two weeks to serve as the quarterfinal venue. The tournament then travels to North Wilkesboro Speedway, where the track will host its first points race in three decades, and culminates with the championship‑deciding Brickyard 400 at Indianapolis Motor Speedway in week five.
All five rounds will be shown live on TNT, ensuring that fans can follow each stage of the competition from the opening road‑course race in Sonoma to the final showdown at Indianapolis.