| # | Track | Winner |
|---|
| 1 | Streets of St. Petersburg | Josef Newgarden |
| 2 | Circuit of the Americas | Colton Herta |
| 3 | Barber Motorsports Park | Takuma Sato |
| 4 | Streets of Long Beach | Alexander Rossi |
| 5 | Indianapolis Motor Speedway Road Course | Simon Pagenaud |
| 6 | Indianapolis Motor Speedway | Simon Pagenaud |
| 7 | The Raceway on Belle Isle | Josef Newgarden |
| 8 | The Raceway on Belle Isle | Scott Dixon |
| 9 | Texas Motor Speedway | Josef Newgarden |
| 10 | Road America | Alexander Rossi |
| 11 | Exhibition Place | Simon Pagenaud |
| 12 | Iowa Speedway | Josef Newgarden |
| 13 | Mid-Ohio Sports Car Course | Scott Dixon |
| 14 | Pocono Raceway | Will Power |
| 15 | World Wide Technology Raceway | Takuma Sato |
| 16 | Portland International Raceway | Will Power |
| 17 | WeatherTech Raceway Laguna Seca | Colton Herta |
Lead Lap — NASCAR, IndyCar & Formula 1 statistics. Not affiliated with any sanctioning body.