The Shamrock Run Fest is Portland’s most beloved running tradition, held annually in March to coincide with St. Patrick’s Day. The Shamrock Half Marathon headlines a race weekend that also includes an 8K, 5K, scenic Stride walk, and the kid-friendly Lucky Lap. The 13.1-mile course cuts through the heart of downtown Portland and climbs into the hills for panoramic views of the city, Willamette River, and iconic bridges. With roaring crowd support and a distinctly festive Irish flair, this event captures the spirit of Portland’s running community like no other. Post-race, runners gather for live music, local craft beer, and an electric finish-line festival that turns the city green with celebration.