Dallara IL-15
| Week | Date | Track | Cars |
|---|---|---|---|
| 1 | Feb 28 | Sebring International Raceway - International | Dallara IL-15 |
| 2 | Mar 7 | Phoenix Raceway - Oval | Dallara IL-15 |
| 3 | Mar 21 | St. Petersburg Grand Prix - Grand Prix | Dallara IL-15 |
| 4 | Mar 28 | Barber Motorsports Park | Dallara IL-15 |
| 5 | Apr 18 | Long Beach Street Circuit | Dallara IL-15 |
| 6 | May 9 | Indianapolis Motor Speedway - Road Course | Dallara IL-15 |
| 7 | May 30 | Detroit Grand Prix at Belle Isle - Belle Isle | Dallara IL-15 |
| 8 | Jun 6 | World Wide Technology Raceway (Gateway) - Oval | Dallara IL-15 |
| 9 | Jun 20 | Road America - Full Course | Dallara IL-15 |
| 10 | Jul 4 | Mid-Ohio Sports Car Course - Full Course | Dallara IL-15 |
| 11 | Jul 18 | Nashville Superspeedway | Dallara IL-15 |
| 12 | Aug 8 | Portland International Raceway - Full Circuit | Dallara IL-15 |
| 13 | Aug 15 | Circuit Gilles Villeneuve | Dallara IL-15 |
| 14 | Aug 22 | Chicago Street Course - 2023 Cup | Dallara IL-15 |
| 15 | Aug 29 | The Milwaukee Mile | Dallara IL-15 |
| 16 | Sep 5 | WeatherTech Raceway at Laguna Seca - 2026 | Dallara IL-15 |