Iowa 300 Race 1
Iowa Speedway
.894 Mile Paved Oval
250 Laps/223.5 Miles
July 17, 2020
| Finish | Start | Driver | Car # | Sponsor/Name | Chassis | Engine | Laps | Status | Points |
| 1 | 23 | Simon Pagenaud | 22 | Menards | Dallara UAK 18 | Chevy | 250 | 1:41:25.2939 132.220 | 53 |
| 2 | 17 | Scott Dixon | 9 | PNC Bank | Dallara UAK 18 | Honda | 250 | 1:41:25.7893 132.210 | 40 |
| 3 | 14 | Oliver Askew | 7 | Arrow McLaren SP | Dallara UAK 18 | Chevy | 250 | 1:41:35.5067 132.064 | 35 |
| 4 | 8 | Patricio O'Ward | 5 | Arrow McLaren SP | Dallara UAK 18 | Chevy | 250 | 1:41:39.2832 131.917 | 33 |
| 5 | 2 | Josef Newgarden | 1 | Hitachi | Dallara UAK 18 | Chevy | 250 | 1:41:42.0295 131.858 | 31 |
| 6 | 5 | Alexander Rossi | 27 | AutoNation/NAPA Auto Parts | Dallara UAK 18 | Honda | 250 | 1:41:44.8943 131.796 | 28 |
| 7 | 9 | Jack Harvey | 60 | AutoNation/SiriusXM | Dallara UAK 18 | Honda | 250 | 1:41:45.3426 131.786 | 26 |
| 8 | 1 | Conor Daly | 59 | Gallagher | Dallara UAK 18 | Chevy | 250 | 1:41:45.8284 131.776 | 26 |
| 9 | 10 | Marcus Ericsson | 8 | Huski Chocolate | Dallara UAK 18 | Honda | 250 | 1:41:46.0322 131.771 | 22 |
| 10 | 6 | Takuma Sato | 30 | Panasonic/Mi-Jack | Dallara UAK 18 | Honda | 249 | Flagged | 21 |
| 11 | 18 | Álex Palou | 55 | Dale Coyne Racing with Team Goh | Dallara UAK 18 | Honda | 249 | Flagged | 19 |
| 12 | 21 | Graham Rahal | 15 | One Cure | Dallara UAK 18 | Honda | 248 | Flagged | 18 |
| 13 | 11 | Santino Ferrucci | 18 | SealMaster | Dallara UAK 18 | Honda | 247 | Flagged | 17 |
| 14 | 7 | Felix Rosenqvist | 10 | NTT DATA | Dallara UAK 18 | Honda | 247 | Flagged | 17 |
| 15 | 16 | Ed Carpenter | 20 | United States Air Force | Dallara UAK 18 | Chevy | 247 | Flagged | 15 |
| 16 | 12 | Ryan Hunter-Reay | 28 | DHL | Dallara UAK 18 | Honda | 247 | Flagged | 14 |
| 17 | 15 | Charlie Kimball | 4 | Tresiba | Dallara UAK 18 | Chevy | 245 | Flagged | 13 |
| 18 | 19 | Tony Kanaan | 14 | Bryant | Dallara UAK 18 | Chevy | 213 | Pulled in | 12 |
| 19 | 13 | Rinus VeeKay | 21 | SONAX | Dallara UAK 18 | Chevy | 156 | Wrecked | 11 |
| 20 | 4 | Colton Herta | 88 | Capstone Turbine | Dallara UAK 18 | Honda | 156 | Wrecked | 10 |
| 21 | 3 | Will Power | 12 | Verizon | Dallara UAK 18 | Chevy | 142 | Wrecked | 9 |
| 22 | 20 | Marco Andretti | 98 | US Concrete/Curb Records | Dallara UAK 18 | Honda | 128 | Clutch | 8 |
| 23 | 22 | Zach Veach | 26 | Gainbridge | Dallara UAK 18 | Honda | 95 | Clutch | 7 |
| Lap Leaders | Total | Laps |
| Simon Pagenaud | 83 | 138-147, 178-250 |
| Josef Newgarden | 68 | 14-70, 127-137 |
| Takuma Sato | 49 | 78-126 |
| Patricio O'Ward | 30 | 148-177 |
| Conor Daly | 13 | 1-13 |
| Felix Rosenqvist | 7 | 71-77 |