July 26 – 29, 2018
Portland International Raceway – Portland, OR
Group 1 3 4 5b Practice
Group 1 3 4 5b Qualifying
Group 1 3 4 5b Qualifying Race
Group 1 3 4 5b Race 1
Group 1 3 4 5b Race 2
Group 2 Practice
Group 2 Qualifying
Group 2 Qualifying Race
Group 2 Race 1
Group 2 Race 2
Group 5a 7 9 11 Practice
Group 5a 7 9 11 Qualifying
Group 5a 7 9 11 Qualifying Race
Group 5a 7 9 11 Race 1
Group 5a 7 9 11 Race 2
Group 6 10 12a Practice
Group 6 10 12a Qualifying
Group 6 10 12a Qualifying Race
Group 6 10 12a Race 1
Group 6 10 12a Race 2
Group 8 12b Practice
Group 8 12b Qualifying
Group 8 12b Qualifying Race
Group 8 12b Race 1
Group 8 12b Race 2
Historic Formula 1 Practice
Historic Formula 1 Qualifying 1
Historic Formula 1 Qualifying 2
Historic Formula 1 Race 1
Historic Formula 1 Race 2