Washington Half Marathons by Date • By City
Browse all 2020 Washington half marathons by month below. For each race, you’ll find course maps, elevation profiles, runner reviews, and how to sign up.
When you view a race, you’ll also find contact info if you’re having problems with your registration or need to contact the race directors.
January 2020
| Wed Jan 1 | Bling in the New Year Marathon & Half Marathon | Snohomish WA |
| Sat Jan 18 | Frost Eagle Trail Run Half Marathon & 5-Mile | Sammamish WA |
| Sat Jan 18 | The Rain Run Half Marathon | Redmond WA |
| Sun Jan 19 | Nookachamps Winter Runs Half Marathon 10K & 5K | Mount Vernon WA |
| Sat Jan 25 | Tukwila to Alki Half Marathon | Tukwila WA |
February 2020
| Sat Feb 8 | Green River Half Marathon | Tukwila WA |
| Sun Feb 9 | My Better Half Marathon 10K & 5K | Seattle WA |
| Sat Feb 15 | Woolley Trail Runs Marathon Half Marathon & 50K | Sedro-Woolley WA |
| Sat Feb 22 | Dupont Trail Marathon Half Marathon & 12K | Dupont WA |
| Sat Feb 22 | Fort Ebey Kettles Trail Run Marathon & Half Marathon | Whidbey Island WA |
March 2020
| Sat Mar 14 | Lake Stevens Chamber of Commerce C-Trail Half Marathon 10K & 5K | Lake Stevens WA |
| Sat Mar 14 | St. Paddy's Day Run Tacoma Half Marathon 10K 5K & Relay | Tacoma WA |
| Sat Mar 21 | Dash Point State Park Trail Half Marathon & 10K | Federal Way WA |
| Sun Mar 22 | Mercer Island Half Marathon | Mercer Island WA |
| Sat Mar 28 | Honeywagon Runs Half Marathon & 4-Mile | Everson WA |
| Sat Mar 28 | Mountain Marathon & Hillbilly Half Marathon | Olympia WA |
| Sun Mar 29 | Everett Half Marathon & 10K | Everett WA |
April 2020
| Sat Apr 4 | Deception Pass Trail Marathon & Half Marathon | Oak Harbor WA |
| Sat Apr 4 | Yakima River Canyon Marathon & Half Marathon | Selah WA |
| Sun Apr 5 | Wallace Falls Trail Run Half Marathon | Gold Bar WA |
| Sat Apr 18 | Magnuson Series Earth Day Half Marathon 15K 10K & 5K | Seattle WA |
| Sat Apr 18 | Wenatchee Marathon Half Marathon & 10K | Wenatchee WA |
| Sat Apr 25 | Trout Lake Run Half Marathon 10K & 5K | Trout Lake WA |
| Sun Apr 26 | Blooms to Brews Half Marathon | Woodland WA |
| Sun Apr 26 | Mt. Si Relay & Trail Runs Marathon Half Marathon & Ultras | Snoqualmie WA |
| Sun Apr 26 | Mud and Chocolate Half Marathon | Redmond WA |
May 2020
| Sat May 2 | Ghost of Tacoma Marathon & Half Marathon | Tacoma WA |
| Sat May 2 | Sunflower Trail Marathon Half Marathon & Relay | Winthrop WA |
| Sun May 3 | Tacoma City Marathon Half Marathon & Relay | Tacoma WA |
| Sun May 10 | Mother's Day Half Marathon & 5K | Kirkland WA |
| Sat May 16 | San Juan Island Half Marathon | Friday Harbor WA |
| Sun May 17 | Capital City Marathon Half Marathon & 5-Mile | Olympia WA |
| Sun May 17 | Reflection Run Half Marathon 10K & 5K | Washougal WA |
June 2020
| Sat Jun 6 | Snohomish Women's Run Half Marathon & 10K | Everett WA |
| Sun Jun 7 | North Olympic Discovery Marathon Half Marathon 10K & 5K | Port Angeles WA |
| Sun Jun 7 | Teanaway Trail Run Marathon Half Marathon 10K & 5K | Cle Elum WA |
| Sun Jun 28 | Craft Classic Seattle Half Marathon & 5K | Redmond WA |
July 2020
| Sat Jul 11 | Tinker Half Marathon | Long Beach WA |
| Sat Jul 18 | B & O Half Marathon & 10K | Orting WA |
| Sat Jul 18 | Olympia Lakefair Run Half Marathon | Olympia WA |
| Sat Jul 25 & Sun Jul 26 | Jack and Jill's Downhill Marathon & Half Marathon | North Bend WA |
August 2020
| Sat Aug 1 | Beast of Big Creek Trail Race | Hoodsport WA |
| Sat Aug 1 | Galloping Gertie Half Marathon 10K & 5K | Gig Harbor WA |
| Sat Aug 1 | Paradise Valley Trail Run Half Marathon 10K & 5K | Woodinville WA |
| Sat Aug 1 | Tiger Peak Challenge Half Marathon 50K & 5-Mile | Issaquah WA |
| Sat Aug 8 | Suncadia Half Marathon & 5K | Cle Elum WA |
| Mon Aug 10 | Northwest Series Marathon Half Marathon 10K & 5K – Day 3 | Clarkston WA |
| Tue Aug 11 | Northwest Series Marathon Half Marathon 10K & 5K – Day 4 | Clarkston WA |
| Sat Aug 15 | Tacoma Narrows Half Marathon | Tacoma WA |
| Sun Aug 16 | Evergreen Half Marathon & 5K | Snohomish WA |
| Sun Aug 16 | Mud and Chocolate Half Marathon & 4.5-Mile Trail Run | Sammamish WA |
| Sun Aug 30 | Iron Horse Half Marathon | North Bend WA |
September 2020
| Mon Sep 7 | Labor Day Half Marathon & 5K Run/Walk | Redmond WA |
| Sat Sep 12 | Beat the Blerch Marathon Half Marathon 10K & 5K | Carnation WA |
| Sat Sep 12 | Cascade Express Half Marathon | Snoqualmie Pass WA |
| Sun Sep 13 | Mt. Si Hill Climb Half Marathon | North Bend WA |
| Sun Sep 13 | Whidbey Island Marathon Half Marathon 10K & 5K | Oak Harbor WA |
| Sat Sep 19 | Happy Girls Run Spokane Half Marathon 10K & 5K | Spokane WA |
| Sat Sep 19 | Run the Dam Half Marathon 10K & 5K | Grand Coulee WA |
| Sun Sep 20 | Appletree Marathon & Half Marathon | Vancouver WA |
| Sun Sep 20 | Orca Half Marathon | Seattle WA |
| Sun Sep 20 | Quilcene Oyster Half Marathon 10K & 5K | Quilcene WA |
| Sun Sep 27 | Bellingham Bay Marathon Half Marathon 10K & 5K | Bellingham WA |
| Sun Sep 27 | Harstine Island Half Marathon | Shelton WA |
| Sun Sep 27 | Negative Split Half Marathon 10K & 5K | Spokane WA |
October 2020
| Sat Oct 3 | Leavenworth Oktoberfest Marathon & Half Marathon | Leavenworth WA |
| Sat Oct 3 | Run Like a Girl Half Marathon & 10K | Bellingham WA |
| Sat Oct 10 | Dog Lake Half Marathon | Dog Lake WA |
| Sat Oct 10 | Fidalgo Trail Run Marathon Half Marathon & 5K | Anacortes WA |
| Sat Oct 10 | Lake Padden Trail Half Marathon & 5K | Bellingham WA |
| Sat Oct 10 | Poulsbo Half Marathon & 10K | Poulsbo WA |
| Sun Oct 11 | Girlfriends Run for a Cure Half Marathon | Vancouver WA |
| Sun Oct 11 | Race the Reserve Marathon Half Marathon 10K & 5K | Coupeville WA |
| Sun Oct 11 | Spokane Marathon Half Marathon 10K & Relay | Spokane WA |
| Sat Oct 17 | Lewis-Clark Half Marathon & 5K | Clarkston WA |
| Sat Oct 17 | Squak Mountain Trail Half Marathon 50K & 12K | Issaquah WA |
| Sun Oct 18 | Craft Classic Seattle Half Marathon & 5K | Redmond WA |
| Sun Oct 18 | Snohomish River Run Marathon & Half Marathon | Snohomish WA |
| Sun Oct 25 | Scary Run Half Marathon 10K & 5K | Washougal WA |
November 2020
| Sat Nov 7 | Lake Washington Half Marathon & 5K | Kirkland WA |
| Sun Nov 8 | Mud and Chocolate Half Marathon | Redmond WA |
| Sat Nov 14 | Grand Ridge Marathon Half Marathon 50K & 5-Mile | Issaquah WA |
| Thu Nov 26 | Wattle Waddle and Wittle Waddle Marathon & Half Marathon | Snohomish WA |
| Sat Nov 28 | Seattle Ghost Marathon Half Marathon & 50K | Seattle WA |
| Sun Nov 29 | Seattle Marathon & Half Marathon | Seattle WA |
December 2020
| Sat Dec 5 | Redmond Reindeer Romp Half Marathon & 5-Mile | Redmond WA |
| Sat Dec 12 | Pigtails Run Marathon Half Marathon & 50K | Maple Valley WA |
| Thu Dec 31 | Last Chance Marathon & Half Marathon | Bellingham WA |
