Ultramarathons in Seattle

Other upcoming races in Seattle

• 2026 Greenlake 5K and Wellness Festival - 5K Elite (17 minutes or under)
  Oct 24, 2026 · 5 km
• 2026 Greenlake 5K and Wellness Festival - 5K High School or Middle School
  Oct 24, 2026 · 5 km
• 2026 Greenlake 5K and Wellness Festival - Greenlake 5K Run or Walk
  Oct 24, 2026 · 5 km
• Run Scared 5K & 10K
  Oct 25, 2026 · 5–10 km
• Halloween Trick or Trot Run 5K/10K/13.1 SEATTLE - 13.1 Half-Marathon Registration
  Oct 31, 2026 · 21.1 km
• Halloween Trick or Trot Run 5K/10K/13.1 SEATTLE - Virtual Run Registration
  Oct 31, 2026 · 5 km
• Halloween Trick or Trot Run 5K/10K/13.1 SEATTLE - 5K/10K/13.1 Eco-Registration (No Shirt)
  Oct 31, 2026 · 5 km
• Halloween Trick or Trot Run 5K/10K/13.1 SEATTLE - 10K Registration
  Oct 31, 2026 · 10 km
• Halloween Trick or Trot Run 5K/10K/13.1 SEATTLE - 5K Registration
  Oct 31, 2026 · 5 km
• Halloween Trick or Trot Run 5K/10K/13.1 SEATTLE - Family 1 Mile Fun Run
  Oct 31, 2026 · 1.6 km
• Run for Mental Health 5K/10K/13.1 SEATTLE - 10K Registration
  Nov 14, 2026 · 10 km
• Run for Mental Health 5K/10K/13.1 SEATTLE - Family 1 Mile Fun Run
  Nov 14, 2026 · 1.6 km
• Run for Mental Health 5K/10K/13.1 SEATTLE - 5K/10K/13.1 Eco-Registration (No Shirt)
  Nov 14, 2026 · 5 km
• Run for Mental Health 5K/10K/13.1 SEATTLE - 5K Registration
  Nov 14, 2026 · 5 km
• Run for Mental Health 5K/10K/13.1 SEATTLE - 13.1 Half-Marathon Registration
  Nov 14, 2026 · 21.1 km
• Run for Mental Health 5K/10K/13.1 SEATTLE - Virtual Run Registration
  Nov 14, 2026 · 5 km
• Let Me Run Spring Fest 5K 2026 - Let Me Run Fall Fest 5K 2026
  Nov 14, 2026 · 5 km
• Tacky Turkey Sweater 5k - Virtual - no shirt included
  Nov 22, 2026 · Unknown
• Tacky Turkey Sweater 5k - Tacky Turkey Sweater 5k - Kids Entry (14 and Under)
  Nov 22, 2026 · 5 km
• Tacky Turkey Sweater 5k - FREE Kid's entries - no bib, no medal, no other perks - just the race untimed.
  Nov 22, 2026 · 5 km