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Races near Seattle in September 2027

4 races on the calendar for September. Listed by date, with prices and early-bird deadlines where the race publishes them.

Oct 2026Nov 2026Dec 2026Jan 2027Feb 2027Mar 2027Apr 2027May 2027Jun 2027Jul 2027Aug 2027Sep 2027

• Sat4Sep

  Fall - Mud Mountain Dam Marathon & Half Marathon

  Sat Sep 4 · 7:00 AM · Enumclaw · Eastside & South King

  Half marathonMarathon

  from $105Goes up Jan 1
• Mon6Sep

  Redmond Harvest Half Marathon

  Mon Sep 6 · 8:30 AM · Redmond · Eastside & South King

  Half marathonTrail

  from $59Reg. closed
• Sat11Sep

  Cirque Series - Crystal Mountain, WA

  Sat Sep 11 · 8:00 AM · Crystal Mountain · Eastside & South King

  7.9 milesTrail

  from $99
• Sat18Sep

  The Brooks Orca Half Marathon presented by REI

  Sat Sep 18 · 7:20 AM · Seattle · Seattle (city)

  Half marathon

  from $95Goes up Nov 1