32 Half Marathon Races in Seattle WA Metro

Join us in celebrating the rich history of the Puyallup Valley with a scenic run along the river!This is a fast and relatively flat course, perfect for chasing a PR or enjoying a smooth, scenic...

Experience the beauty of Maple Valley with a race designed for speed and serenity. This fast, flat, and scenic course offers runners the perfect blend of challenge and tranquility, winding...

The Poulsbo Half Marathon/10k has a beautiful new loop course that takes you through "Little Norway". It will feature chip timing, a participant's shirt, finisher's medal, and free race photo...

Snohomish River Run – Sunday, October 11th Experience the magic of fall in the Pacific Northwest at the Snohomish River Run—where crisp autumn air, vibrant colors, and scenic river views come...

The Lake Washington Half marathon is a beautiful loop course that starts and finishes and Juanita Beach Park in Kirkland. See more details on the website here!  Earn the  R-Pod medal when you...

Loops will be an incredibly enjoyable experience while simultaneously basking in the breathtaking panoramic views of the magnificent Bay! This sensational running trail allows participants to...

November 28, 2026, will be the 41st running of the Seattle Ghost Marathon.  It started in 1985 when the Seattle Marathon changed courses and moved from Saturday to Sunday of Thanksgiving weekend....

The Brooks Lake Sammamish Half Marathon presented by REI is a point to point race from Redmond to Sammamish. You will run along the East Lake Sammamish Trail that is fully paved. We also offer a...

Mill Town Half Half Marathon, 10K and 5K Saturday, March 2027 Port of Everett, Everett, WA Experience the Beauty. Embrace the Challenge. Join the Snohomish Running Company for one of the most...

Join us for the return of the Ghost of Tacoma on Saturday and the Tacoma City Marathon on Sunday with Marathon Relay, Half Marathon, 5K, 10K and Kids 1K options also available. Run 3 races in 2...

The Mother’s Day Half Marathon & 5K is now the Kirkland Half Marathon and 5K. Still the same great course and put on by the same great people. Your race entry includes chip timing, finisher’s...

Join the Snohomish Running Company on Sunday, May 31st for the fastest paved half marathon in the Northwest: The Evergreen Half. The Evergreen Half is a point to point half marathon from Getchell...