The Metropolitan Area Express (MAX) is a light rail system serving the Portland metropolitan area in the U.S. state of Oregon. Owned and operated by TriMet, it spans 59.7 miles (96.1 km) and comprises five lines and 93 stations. The system connects parts of Clackamas, Multnomah, and Washington counties, with the Blue, Orange, Red, and Yellow lines converging in downtown Portland and the Green Line operating along Interstate 205 (I-205) in East Portland and Clackamas. Trains run at frequencies ranging from 30 minutes off-peak to 7+1⁄2 minutes in overlapping segments. In 2025, MAX had a ridership of 22.1 million.