2026 NASCAR O’Reilly Auto Parts Series entry list at Chicagoland Speedway

After winding through Wine Country at Sonoma Raceway, the NASCAR O'Reilly Auto Parts Series heads to Chicagoland Speedway for the first time since 2019 on Saturday (5:30 p.m. ET, The CW, MRN Radio, SiriusXM NASCAR Radio). The race will be the 20th points-paying event of the 2026 O'Reilly season. ENTRY LISTS: Cup Series | O'Reilly Auto Parts Series This will be the O'Reilly Auto Parts Series' first time back in Joliet, Illinois since 2019 and will be a bit of a homecoming for points leader Justin Allgaier who is 207 markers ahead of Jesse Love in the standings. Cup Series mainstays Connor Zilisch (No. 1 JR Motorsports), Chase Elliott (No. 88 JR Motorsports) and Cole Custer (No. 0 SS-Greenlight Racing) help make up the 38 cars entered in this weekend's event. Custer is also the most recent winner at Chicagoland. MORE: Weekend schedule | How to watch NASCAR on The CW View the full entry list here: