The Grand Prix of Portland is an Indy Car Series race held at Portland International Raceway in Portland, Oregon. The race was held every year from 1984 through 2007 first as a CART series race, then as part of Champ Car World Series. After a ten-year absence, the race returned to the IndyCar Series for the 2018 season. Portland is best-remembered as being the site of two of the closest finishes on a road course in Indy car racing history. In 1986, Michael Andretti lost fuel pressure on the final turn of the final lap, which allowed his father Mario to catch up and beat him to the finish line by 0.070 seconds. At the time, it was the closest finish of any race in Indy car history. In 1997, in a three-wide finish, Mark Blundell beat second place Gil de Ferran by 0.027 seconds, and beat third place Raul Boesel by 0.055 seconds. For a road course race, it was the all-time closest finish in CART series history, as well as the closest three-car finish in series history. For nearly its entire existence, the title sponsor of the race was G.I. Joe's sporting goods and auto parts store, and the event was held during or around the Portland Rose Festival. Numerous times, the race was held on Father's Day. Beginning in 2018, the race was held in September on Labor Day weekend, promoted by Green Savoree Racing Promotions. Race winners IndyCar Series Notes 1997 & 2001: Race shortened due to time limit. Support races Race summaries CART PPG Indy Car World Series 1984: The CART series debuted at Portland International Raceway in 1984. It was also the first race which CART utilized radial tires. Mario Andretti and Danny Sullivan swept the front row in Lola T-800 machines, the only two Lola chassis in the field. Andretti, however, dropped out early with engine problems, and Sullivan suffered gear box trouble. Al Unser Jr. took the lead for the final time on lap 39, and led all the way to the finish for his first-career Indy car victory. Geoff Brabham finished second. 1985: Mario Andretti passed Al Unser Jr. for the lead with 19 laps to go, and pulled out to a 25-second victory. Unser Jr. led 49 laps, but after his final pit stop, a bad set of tires and fuel concerns forced him to slow his pace. Andretti was