The 2023 Portland 112 was the 4th stock car race of the 2023 ARCA Menards Series West season, and the 3rd running of the event. The race was on Friday, June 2, 2023, at Portland International Raceway in Portland, Oregon, a 1.967 mile (3.166 km) permanent asphalt road course. The race took the scheduled 57 laps to complete. In a wild race, Landen Lewis, driving for McGowan Motorsports, would break his 2nd-place streak and hold off a challenging Cole Custer on the final restart to earn his second career ARCA Menards Series West win, and his first of the season. Lewis won the pole and led 18 laps of the race, while Custer led a race-high 22 laps and finished 2nd.[5] To fill out the podium, Dale Quarterley, driving for his own team, 1/4 Ley Racing, would finish in 3rd, respectively.
The first and only practice session was held on Friday, June 2, at 11:35 AM PST, and would last for 1 hour.[6]Todd Souza, driving for his own team, Central Coast Racing, would set the fastest time in the session, with a lap of 1:12.746, and a speed of 97.490 mph (156.895 km/h).[7]
Qualifying was held on Friday, June 2, at 3:10 PM PST.[6] The qualifying system used is a multi-car, multi-lap based system. All drivers will be on track for a 20-minute timed session, and whoever sets the fastest time in the session will win the pole.[9]
Landen Lewis, driving for McGowan Motorsports, would score the pole for the race, with a lap of 1:16.795, and a speed of 92.350 mph (148.623 km/h).[10]