2026 NASCAR Cup Series entry list for Iowa Speedway

After a weekend away from the track, the NASCAR Cup Series returns to action for the final regular-season stretch, beginning with Iowa Speedway on Sunday (3:30 p.m. ET, USA Network,  HBO Max, MRN Radio, SiriusXM NASCAR Radio). The event will mark the 23rd points-paying race of the 2026 campaign. Hendrick Motorsports' William Byron is the defending winner. ENTRY LISTS: Cup Series | O'Reilly Auto Parts Series Thirty-six cars are entered into this weekend's event. MORE: Weekend schedule | How to watch NASCAR on NBC, USA Network View the full entry list here: