Mt. Si Relay & Trail Runs
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The Mt. Si Trail Races began as the “Falls to Gasworks Relay” in 1983, beginning at Mt. Si High School near Snoqualmie Falls and ending at Gasworks Park in Seattle.
Today, the half marathon, marathon, 50K, 50M, and relay are run on the scenic Snoqualmie Valley Trail with the marathon, 50K and 50M continuing to run east on the Palouse to Cascades Trail. The trail is old railroad grade with a gentle climb from North Bend to Rattlesnake Lake.
Run Pick of the Month - Portland Marathon
Run Rose City's signature premier running event with a marathon, half marathon, and 10K, happening October 5, 2025.
Enjoy a course with gorgeous views of Portland's waterfront, several bridge crossings, and a full tour of some of the city's most iconic landmarks!
Runners will score free race photos and highlight videos, event and sponsor swag - including race medals and event shirt, plus food and drinks at the Finish Line Festival, including a complimentary, Oregon-brewed beer (runners 21+ only).
Save 20% on your registration using code "RG20"
Click the button below to get all the details!
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