When is Shamrock Run?

Shamrock Run takes place on Mar 15, 2026. That's in 3 weeks.

Where is Shamrock Run located?

Shamrock Run is held in Portland, Oregon, United States.

What distances are available at Shamrock Run?

Shamrock Run offers the following distances: 13.1M, 15K, 8K, 5K.

What is the typical weather for Shamrock Run?

Based on historical data, you can expect temperatures between 40°F and 56°F on race day. There's approximately a 19% chance of precipitation.

Shamrock Run (5K-13.1M) - Mar 15, 2026 | Portland, OR

Lace up your greenest gear for the iconic Shamrock Run, set to paint the streets of Portland, OR, emerald on March 15, 2026. As the city's oldest and largest running event, and the third largest in the Western United States, this race is a cherished annual tradition, attracting up to 35,000 participants across its diverse offerings. Choose your challenge from a Half Marathon (13.1M), 15K, 8K, or 5K, with options for walkers and a kids' "Leprechaun Lap" ensuring fun for the whole family.

The Shamrock Run's courses offer a blend of urban scenery and challenging terrain. While the 5K and 8K primarily feature relatively flat out-and-back routes along the vibrant waterfront, the longer 15K and Half Marathon distances introduce significant elevation. Half marathoners will navigate downtown Portland, enjoying waterfront views and historic bridges, before tackling the "gnarly hills" of Terwilliger Parkway, which includes nearly 700 feet of vertical gain within the first 8 kilometers. Runners should anticipate an undulating course with a notable incline between miles 4-8 and a "sneaky last climb" before a rewarding downhill finish. Aid stations are well-supplied with water, Gatorade, and energy gels, though bringing personal gels is recommended due to potential traffic. Typical race day conditions in mid-March bring highs around 56°F and lows around 40°F, with a 19% chance of precipitation, embracing the true Pacific Northwest spirit.

What truly sets the Shamrock Run apart is its festive St. Patrick's Day atmosphere and vibrant community spirit, often enhanced by the sight of a bagpiper at the top of Terwilliger Hill. Finishers are greeted with a lively post-race party featuring free Widmer Brothers beer (for those over 21), delicious salmon chowder, and live music. All participants receive tech shirts and a commemorative finisher medal, with the half marathon medal uniquely doubling as a bottle opener. This event not only promises a memorable race experience but also contributes to a great cause, raising funds for Doernbecher Children's Hospital Foundation.