RaceMob

Upcoming Seattle, Washington Half Marathon Races

View some of the best Half Marathon races in Seattle, Washington! RaceMob's race calendar allows you to find races that suits your needs. Use our advanced filters below or calendar on the right, and discover new races. We try to maintain up to date information, and rely heavily on our community of volunteers. If you find a race that we're missing, use the "Suggest Race" button on the right. Find RaceMob discounts that others have added or add deals that you've discovered.

    • 1/2M

    Seattle, WA

    5.27 miles away

    I'm Attending

    My Better Half Marathon

    My Better Half is back at Seward Park and dare we say better than ever! Prepare yourself for a running event like no other. Romance. Kitsch. Sweat. My Better Half Marathon is a celebration of running, romance and rom-coms. There are 4 categories: ...

    • 1/2M

    Snohomish, WA

    20.65 miles away

    I'm Attending

    Lord Hill Trail Run

    / 5 RaceMobbers Scheduled

    The Evergreen running season starts at Lord Hill! Lord Hill Park has been a favorite early season trail run for many runners, and 2024 will mark the race's 19th year! Lord Hill Park is a regional country park nestled in Snohomish, Washington. With...

    • 1/2M

    Redmond, WA

    10.28 miles away

    I'm Attending

    Lake Sammamish Half Marathon

    / 5 RaceMobbers Scheduled

    The Lake Sammamish Half Marathon is a point to point race that takes runners along the smooth trail that connects Marymoor Park in Redmond to Lake Sammamish State Park in Issaquah. This interurban trail is very popular with runners; about 30% of t...

    • 1/2M

    Kent, WA

    13.04 miles away

    I'm Attending

    Run The Green

    Join us on March 16th for Run the Green!  The half marathon and 10K courses are out and backs on the Green River Trail, and along the way you'll enjoy scenery of the river and golf course.  Flat and fast you won't want to miss this race.  All part...

    • 1/2M

    Tacoma, WA

    24.69 miles away

    I'm Attending

    St. Paddy's Day Run Tacoma

    The half marathon is a gorgeous out-and-back course starting in downtown Tacoma, with a few rolling hills to keep those legs awake and working. You'll run along the waterfront until it connects to the Ruston Way Path, where you'll head towards the...

    • 1/2M

    Seattle, WA

    3.68 miles away

    I'm Attending

    Seattle Cherry Blossom Run

    / 1 RaceMobber Scheduled

    Registration is open! This event SELLS OUT every spring season! Introducing a 10K and a FULL Boston Qualifier Marathon!Why wait? Take advantage of earlybird prices and SIGN UP NOW to celebrate spring at the University of Washington campus on March...

    • 1/2M

    Issaquah, WA

    15.57 miles away

    I'm Attending

    Squak Mountain Trail Run

    / 2 RaceMobbers Scheduled

    Join us for a run at Squak Mountain State Park near Issaquah, Washington and a short drive from Seattle. Squak features cushy, well-maintained trails and beautiful views of the surrounding mountains. This forested park in the Pacific Northwest fe...

    • 1/2M

    Tacoma, WA

    25.41 miles away

    I'm Attending

    Tacoma City Marathon / Half / Ghost / 5K

    Mark your calendar for the weekend of April 27th & 28th, 2024 and join us for the return of the Ghost of Tacoma on Saturday and the Tacoma City Marathon on Sunday with Marathon Relay, Half Marathon and 5K options also available. Run 3 races i...

    • 1/2M

    Kirkland, WA

    8.67 miles away

    I'm Attending

    Kirkland Half Marathon & 5K

    The Mother’s Day Half Marathon & 5K is now the Kirkland Half Marathon and 5K. Still the same great course and put on by the same great people. Your race entry includes chip timing, finisher’s medal (for both half and 5k), super soft race t-sh...

    • 1/2M

    Sammamish, WA

    15.8 miles away

    I'm Attending

    Soaring Eagle Trail Run

    Right in Sammamish, Soaring Eagle Regional Park is a very popular destination for runners and hikers alike with easy-to-access trailheads. It's relatively flat compared to some of our other races but has some sections with large roots. The distan...

    • 1/2M

    Olympia, WA

    47.14 miles away

    I'm Attending

    Capital City Marathon

    Welcome to Capital City Marathon, one of the best marathons in the Northwest. Located in fun and friendly Olympia, Washington, we feature a beautiful course with rolling hills, enthusiastic volunteers, a festive post-race event with food, music, m...

    • 1/2M

    North Bend, WA

    28.87 miles away

    I'm Attending

    Jack & Jill Downhill Marathon, Half Marathon Washington

    Jack & Jill's Downhill Marathon is a fast gentle downhill course on one of Washington's most scenic trails. North Bend, WA is located just 31 miles east of Seattle. Runners are bused to Hyak from North Bend. After you pass through the Snoqualm...

    • 1/2M

    Tacoma, WA

    26.58 miles away

    I'm Attending

    Tacoma Narrows Half Marathon / 5K

    / 2 RaceMobbers Scheduled

    Take me out to the ballgame, but first run over the bridge! Feed me a bagel and electrolytes, I just hope that my hamstrings aren’t tight! The Tacoma Narrows Half Marathon is back, featuring a Half Marathon and 5K course that begins and ends at C...

    • 1/2M

    North Bend, WA

    25.76 miles away

    I'm Attending

    Iron Horse Half Marathon

     The Iron Horse Half Marathon will take place on August 25th, 2024 and is a half marathon starting at Olallie State Park and finishing in North Bend. It is a beautiful course that winds along the river and through the woods. PLUS IT'S 90% DOWNHILL...

    • 1/2M

    Redmond, WA

    10.62 miles away

    I'm Attending

    HERO House NW Run

    HERO House NW Run We are excited to offer the fifth annual HERO House NW 5K / 10K / Kids Fun Run! Take a step for mental health and Run Like a HERO to benefit HERO House NW and Clubhouse programs. Run or walk on Saturday, September 7, 2024 starti...

    • 1/2M

    Seattle, WA

    2.52 miles away

    I'm Attending

    Orca Half Marathon

    TWO DAYS IN 2024! And a new distance on Sunday only: The Orca 8-Miler The Orca Half is a half marathon along the shores of West Seattle, starting at Lincoln Park and finishing at Don Armeni Boat Launch. The half course is point to point, with two...

    • 1/2M

    Buckley, WA

    37.04 miles away

    I'm Attending

    Mud Mountain Dam Marathon / Half / 5K

    The Marathon course starts at Mud Mountain Dam Park (elevation 1,319′), located deep in the forest next to the iconic White River. Kicking off with a 7 mile rolling downhill run through the Mud Mountain neighborhoods, you’ll head towards the SR 41...

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