Washington Half Marathon Races

Upcoming 13.1-mile races in Washington. Compare dates, courses, and registration.

Race List

October 10, 2026

Bagel Run 5K/10K/13.1 SEATTLE

October 10, 2026

Middle Fork Trail Run

October 11, 2026

The Spokane Marathon

October 11, 2026

Snohomish River Run

October 17, 2026

Lake Washington Half Marathon

October 18, 2026

Girlfriends Half Marathon, 10K & 6K

October 25, 2026

Tri-Cities Marathon

October 31, 2026

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

November 7, 2026

Grand Ridge Trail Run

November 8, 2026

Run The Bay

November 28, 2026

Seattle Ghost Marathon, Half Marathon & 50K

November 28, 2026

Coffee Lovers Run 5K/10K/13.1 SEATTLE

November 28, 2026

UW Medicine Seattle Marathon & Half Marathon

December 12, 2026

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

December 26, 2026

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

January 16, 2027

MLK Freedom Run 5K/10K/13.1 SEATTLE

January 30, 2027

Coffee Lover Run SEATTLE

February 14, 2027

My Better Half Marathon

February 20, 2027

Fort Ebey Kettles Trail Run

March 6, 2027

Lake Sammamish Half Marathon

March 6, 2027

Brooks Lake Sammamish Half Marathon presented by REI

March 14, 2027

Run The Green

March 14, 2027

Shamrock Shuffle Half Marathon

March 20, 2027

Dash Point

March 27, 2027

Mill Town Marathon

March 27, 2027

Honeywagon Runs Half Marathon & 4 Mile Run

April 3, 2027

Yakima River Canyon Marathon and Half-Marathon

April 3, 2027

Deception Pass 13.1M & 10K

April 10, 2027

OAT Run (Olympic Adventure Trail Run)

April 10, 2027

The Split Half Marathon, 10k & 5K

April 17, 2027

Wenatchee Marathon

April 17, 2027

Squak Mountain