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Best 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

    Sequim, WA

    42.26 miles away

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    Jamestown S'Klallam Tribe Run

    Join us in the 5th of 5 races in the 2021 Run the Peninsula Road Race Series, Jamestown S'Klallam 5K / 10K. The 5K and 10K will be an out and back on the Olympic Discovery Trail.  The 5K and 10K will start at dusk, approximately 4:30 pm on Saturd...

    • 1/2M

    Port Orchard, WA

    14.73 miles away

    I'm Attending

    Yukon Do It! Winter Edition 2021

    Run your last half or full marathon of the year along the waterfront in Port Orchard! The ONLY half and full marathons in town! Both the full and half marathons are USATF CERTIFIED!  Every race participant receives a finisher's medal! If you regi...

    • 1/2M

    Redmond, WA

    11.03 miles away

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    Lake Sammamish Half Marathon

    The Lake Sammamish Half Marathon 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 the course will be on smooth gr...

    • 1/2M

    Federal Way, WA

    20.18 miles away

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    Dash Point Trail Run

    Dash Point State Park is a 398-acre camping park in the Pacific Northwest with 3,300 feet of saltwater shoreline on Puget Sound. The beach provides unobstructed views of the Sound and lots of opportunities to observe wildlife such as coyotes, foxe...

    • 1/2M

    Seattle, WA

    4.06 miles away

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    UW Cherry Blossom Run

    Spring is around the corner! The 2022 UW Cherry Blossom Run is returning to the Quad at University of Washington. As many of you already know the Quad at University of Washington is home to some of the oldest and most beautiful cherry blossom t...

    • 1/2M

    Everett, WA

    28.09 miles away

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    Langus Riverfront Park Half Marathon - April 2, 2022

    TimeThe race starts at 8:30 AM.Packet pickup starts one hour before the race and ends ten minutes before the race starts.Online registration only. Half MarathonPre-Registration Club Member Price: $20.00.Pre-Registration Price:  $40.00. Race High...

    • 1/2M

    Issaquah, WA

    15.57 miles away

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    Squak Mountain Trail Run

    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

    Kirkland, WA

    7.53 miles away

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    Mother's Day Half Marathon & 5K

    The Mother’s Day Half Marathon & 5K is an annual race celebrating Mother’s Day with running! We will also have a kid's race. Located in beautiful Kirkland, Washington.  Your race entry includes chip timing, finisher’s medal (for both half and...

    • 1/2M

    Sammamish, WA

    15.8 miles away

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    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

    Issaquah, WA

    15.32 miles away

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    Tiger Peak Challenge

    Located near Issaquah, Tiger Mountain State Forest is a 13,745-acre working forest that includes the West Tiger Mountain Natural Resources Conservation Area. Tiger Mountain offers many recreational opportunities including hiking, mountain biking, ...

    • 1/2M

    North Bend, WA

    28.87 miles away

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    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

    Enumclaw, WA

    29.62 miles away

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    Black Diamond Triathlon

    Raise the Bar Events is excited to present the 2022 Black Diamond 70.3, Olympic, & Sprint Triathlons in the beautiful Cascade Foothills of Western Washington.  We also have a Long Course Aquabike and Duathlon.   Triathletes will swim in pict...

    • 1/2M

    Kirkland, WA

    8.71 miles away

    I'm Attending

    Lake Washington Half Marathon

    The Lake Washington Half marathon is a beautiful loop course that starts and finishes and Juanita Beach Park in Kirkland. See more details on the website here!  Earn the  R-Pod medal when you sign up for any 3 Orca Running races! Check out our ...

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