Iowa Speedway
.894 Mile Paved Oval
Newton, Iowa
IRL sanctioned 2007-10
INDYCAR sanctioned 2011-13, 15-18, 22- 24
| Race # | Date | Race | Miles | Winner |
| 1 | 6/23/2007 | Iowa 100 | 102.81 | Alex Lloyd |
| 2 | 6/22/2008 | Jeld-Wen 100 | 102.81 | Dillon Battistini |
| 3 | 6/20/2009 | Miller Lite 100 | 102.81 | Ana Beatriz |
| 4 | 6/19/2010 | AvoidTheStork.com 100 | 102.81 | Sebastian Saavedra |
| 5 | 6/25/2011 | Sukup 100 | 102.81 | Josef Newgarden |
| 6 | 6/23/2012 | Sukup 100 | 102.81 | Esteban Guerrieri |
| 7 | 6/23/2013 | Sukup 100 | 102.81 | Sage Karam |
| 8 | 7/18/2015 | Iowa 115 | 89.4 | Max Chilton |
| 9 | 7/10/2016 | Indy Lights Iowa Challenge | 89.4 | Félix Serrallés |
| 10 | 7/9/2017 | Mazda Iowa 100 | 89.4 | Matheus Leist |
| 11 | 7/8/2018 | Mazda Iowa 100 | 89.4 | Patricio O'Ward |
| 12 | 7/23/2022 | Indy Lights Oval Challenge of Iowa | 67.05 | Hunter McElrea |
| 13 | 7/22/2023 | Indy NXT by Firestone at Iowa Speedway | 67.05 | Christian Rasmussen |
| 14 | 7/13/2024 | Indy NXT by Firestone at Iowa Speedway | 49.17 | Louis Foster |