The NASCAR O’Reilly Auto Parts Series is set to return to the scenic hills of Sonoma Raceway this Saturday, marking the 19th points‑paying event of the 2026 season. The race will showcase a blend of road‑course expertise and emerging talent on the 2.54‑mile circuit that has become a favorite among drivers and fans alike.
Defending champion Connor Zilisch will once again be in the spotlight, having captured the victory last year in dramatic fashion. His performance has raised expectations for another strong showing, and the team has refined its setup to better handle the unique demands of the Sonoma layout.
Adding extra intrigue, three full‑time NASCAR Cup Series drivers — Shane van Gisbergen, Ross Chastain, and Connor Zilisch — will compete alongside a host of up‑and‑coming racers. Their participation underscores the growing crossover between the premier series and the developmental O’Reilly Auto Parts Series.
A Star‑Studded Field
The presence of Cup Series regulars brings a new level of competition to the weekend, with each driver bringing distinct strategies to the technical challenges of the California track. Fans can anticipate strategic pit stops, tire management battles, and the possibility of a last‑lap showdown that could reshape the championship picture.
With 38 cars entered, the event promises a tightly contested field where every position matters. Series officials have highlighted the partnership with O’Reilly Auto Parts as a testament to the sponsor’s commitment to supporting grassroots competition and fostering the next generation of NASCAR talent.
Beyond the on‑track action, the race serves as a showcase for the synergy between NASCAR and its commercial partners, illustrating how strategic sponsorships can elevate the profile of regional series while delivering thrilling racing experiences for enthusiasts across the United States.