Crewable logoCrewable

100K Races in Washington

As of October 6, 2026, Crewable lists 6 upcoming 100K races in Washington from March 2027 to August 2027. The next is Badger Mountain Challenge on March 26, 2027 in Richland.

Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites

Race calendar

March 2027

1 race

April 2027

1 race

June 2027

3 races

August 2027

1 race

Quick answers

What is the next 100K race in Washington?

Badger Mountain Challenge, on Friday, March 26, 2027, in Richland. Distances: 100 mi, 100K, 50 mi.

What is the busiest month for 100K races in Washington?

June 2027, with 3 of the 6. March 2027 follows with 1.

Cities in Washington

Seattle79Bellingham16Spokane20

Neighboring states

Idaho24Oregon65

More ways to browse

100K races in the US131Races near me
Race planning

Plan your Washington race

Aid stations, cutoffs and pacing in one free plan. Crew invites and race-day updates come with a Race Pass.

Plan a race free