| # | Track | Winner |
|---|
| 1 | Streets of St. Petersburg | Sebastien Bourdais |
| 2 | ISM Raceway | Josef Newgarden |
| 3 | Streets of Long Beach | Alexander Rossi |
| 4 | Barber Motorsports Park | Josef Newgarden |
| 5 | Indianapolis Motor Speedway Road Course | Will Power |
| 6 | Indianapolis Motor Speedway | Will Power |
| 7 | Belle Isle Park | Scott Dixon |
| 8 | Belle Isle Park | Ryan Hunter-Reay |
| 9 | Texas Motor Speedway | Scott Dixon |
| 10 | Road America | Josef Newgarden |
| 11 | Iowa Speedway | James Hinchcliffe |
| 12 | Exhibition Place | Scott Dixon |
| 13 | Mid-Ohio Sports Car Course | Alexander Rossi |
| 14 | Pocono Raceway | Alexander Rossi |
| 15 | Gateway Motorsports Park | Will Power |
| 16 | Portland International Raceway | Takuma Sato |
| 17 | Sonoma Raceway | Ryan Hunter-Reay |
Lead Lap — NASCAR, IndyCar & Formula 1 statistics. Not affiliated with any sanctioning body.