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50K Races Near Seattle, WA

As of October 6, 2026, Crewable lists 16 upcoming 50K races near Seattle, WA from October 2026 to August 2027. The next is Defiance 50K / 30K / 15K on October 10 in Tacoma, WA. Registration is open for 3.

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

Race calendar

October 2026

3 races

November 2026

3 races

  1. Grand Ridge

    Issaquah, WA
    50KMarathon+2
    Open until Nov 6from $45

December 2026

1 race

  1. PIGTAILS RUN

    Maple Valley, WA
    50KMarathon+1
    Closedfrom $35

February 2027

2 races

  1. BURT 100

    Bainbridge Island, WA
    100 mi110K+1

April 2027

1 race

May 2027

2 races

June 2027

1 race

August 2027

3 races

Quick answers

What is the next 50K race near Seattle, WA?

Defiance 50K / 30K / 15K, on Saturday, October 10, 2026, in Tacoma, WA. Distances: 50K, 30K, 15K.

What is the closest 50K race to Seattle?

2025 Seattle Ghost Marathon, Half & 50K in Seattle, WA, about 1 mile from Seattle, on November 28, 2026.

How many 50K races near Seattle, WA have open registration?

3 of the 16 list registration as open as of October 6, 2026, including Defiance 50K / 30K / 15K, Cougar Mountain Trail Run Series (October) and Grand Ridge.

What is the busiest month for 50K races near Seattle, WA?

October 2026, with 3 of the 16. November 2026 follows with 3.

Nearby cities

Bellingham16Portland, OR12Spokane20

Nearby states

Idaho24Oregon21

More ways to browse

50K races in Washington2450K races in the US538
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