List of all Portland Indycars races held in IRL championships

Race Winner Track Race Start
Portland Indycars 2018 Portland Indycars Carlos Iaconelli
Lola B05/52
Portland 2nd September 2018
Portland Indycars 2019 Portland Indycars Rio Haryanto
Lola B05/52
Portland 1st September 2019
Portland Indycars 2021 Portland Indycars Portland 12th September 2021