Race calendar

Half Marathon Races in Seattle, WA

29 upcoming Half Marathon races in Seattle. Run This events are listed first.

Fri, Aug 28, 2026

Fri, Aug 28, 2026

Fri, Sep 11, 2026

Fri, Sep 11, 2026

Fri, Sep 18, 2026

Fri, Sep 25, 2026

Fri, Sep 25, 2026

Fri, Oct 9, 2026

Fri, Oct 9, 2026

Fri, Oct 30, 2026

Fri, Oct 30, 2026

Fri, Nov 13, 2026

Fri, Nov 13, 2026

Fri, Nov 27, 2026

Fri, Nov 27, 2026

Fri, Nov 27, 2026

Fri, Dec 11, 2026

Fri, Dec 11, 2026

Fri, Dec 25, 2026

Fri, Dec 25, 2026

Fri, Jan 15, 2027

Fri, Jan 15, 2027

Fri, Jan 29, 2027

Fri, Jan 29, 2027

Fri, Feb 12, 2027

Fri, Feb 12, 2027

Fri, Mar 19, 2027

Fri, Apr 9, 2027

Fri, Apr 23, 2027

Sloth Run 5K/10K/13.1 SEATTLE

Run for Breast Cancer 5K/10K/13.1 SEATTLE

National Chocolate Day: Run for Chocolates 5K/10K/13.1 SEATTLE

Run for Mental Health 5K/10K/13.1 SEATTLE

The Brooks Orca Half Marathon presented by REI

Oktoberfest Run 5K/10K/13.1 SEATTLE

Run for Donuts 5K/10K/13.1 SEATTLE

Bagel Run 5K/10K/13.1 SEATTLE

Coffee Lovers Run 5K/10K/13.1 SEATTLE

PB&J Fuel Run 5K/10K/13.1 SEATTLE

Halloween Trick or Trot Run 5K/10K/13.1 SEATTLE

Run for Mental Health 5K/10K/13.1 SEATTLE

Veterans Day Freedom Run 5K/10K/13.1 SEATTLE

2026 Seattle Ghost Marathon, Half & 50K

Coffee Lovers Run 5K/10K/13.1 SEATTLE

Thanksgiving Gobble Trot Run 5K/10K/13.1 SEATTLE

Run for Breast Cancer 5K/10K/13.1 SEATTLE

Sunrise Marathon 5K/10K/13.1 SEATTLE

A Merry Christmas Run 5K/10K/13.1 SEATTLE

New Year's Run 5K/10K/13.1 SEATTLE

MLK Jr. Freedom Run 5K/10K/13.1 SEATTLE

Sunrise Marathon 5K/10K/13.1 SEATTLE

Coffee Lover Run SEATTLE

Run for Donut SEATTLE

Valentine's Day Run 5K/10K/13.1 SEATTLE

Run for Chocolate 5K/10K/13.1 SEATTLE

Sunrise Marathon 5K/10K/13.1 SEATTLE

Run for Bagels 5K/10K/13.1 SEATTLE

Coffee Lover Run SEATTLE

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