Founded in 1979, the Shamrock Run Portland is the largest running and walking event in Oregon and is the third largest running event in the western United States. In 2019, 25,000 participants will celebrate the 41st edition of the event on Sunday, March 17 at Waterfront Park in downtown Portland.
The Shamrock Run offers competitive races at 5 kilometers (3.1 miles), 8 kilometers (4.97 miles), 15 kilometers (9.3 miles) and a half-marathon (13.1 miles) with a field limit of 3000 runners. Shamrock also offers the Shamrock Stride, a 4-mile fitness walk, and the Leprechaun Lap, a 1km (0.6-mile) run/walk for children age 10 and younger.
All the courses start at Waterfront Park near SW Oak and Naito Parkway and run through the center of downtown Portland for a fun urban experience and feature slightly downhill final sections. The 15k and half-marathon routes include the challenging, and scenic, Terwilliger hills. The new Shamrock Stride 4-mile walk boasts city views and a river walk including the Tilikum Crossing and Steel Bridges.