| 1 | Pro Mazda GP of St. Petersburg-1 | 3/10/18 | Streets of St. Petersburg | 8 | 1 |
| 2 | Pro Mazda GP of St. Petersburg-2 | 3/11/18 | Streets of St. Petersburg | 1 | 1 |
| 3 | Pro Mazda GP of Alabama-1 | 4/21/18 | Barber Motorsports Park | 7 | 5 |
| 4 | Pro Mazda GP of Alabama-2 | 4/22/18 | Barber Motorsports Park | 9 | 4 |
| 5 | Royal Purple GP supporting Lupus Foundation-1 | 5/11/18 | Indianapolis Motor Speedway Road Course | 2 | 3 |
| 6 | Royal Purple GP supporting Lupus Foundation-2 | 5/12/18 | Indianapolis Motor Speedway Road Course | 5 | 14R |
| 7 | Cooper Tires Freedom 90 | 5/25/18 | Lucas Oil Indianapolis Raceway Park | 5 | 4 |
| 8 | Pro Mazda GP of Road America-1 | 6/22/18 | Road America | 3 | 5 |
| 9 | Pro Mazda GP of Road America-2 | 6/23/18 | Road America | 4 | 5 |
| 10 | Cooper Tires GP of Toronto-1 | 7/14/18 | Streets of Toronto | 1 | 1 |
| 11 | Cooper Tires GP of Toronto-2 | 7/15/18 | Streets of Toronto | 1 | 1 |
| 12 | Cooper Tires Pro Mazda Mid-Ohio Grand Prix-1 | 7/28/18 | Mid-Ohio Sports Car Course | 1 | 1 |
| 13 | Cooper Tires Pro Mazda Mid-Ohio Grand Prix-2 | 7/29/18 | Mid-Ohio Sports Car Course | 2 | 1 |
| 14 | Mazda St. Louis Pro Mazda Oval Challenge | 8/25/18 | World Wide Technology Raceway | 2 | 1 |
| 15 | Grand Prix of Portland Pres. Cooper Tires-1 | 9/1/18 | Portland International Raceway | 1 | 2 |
| 16 | Grand Prix of Portland Pres. Cooper Tires-2 | 9/2/18 | Portland International Raceway | 1 | 2 |