Washington · Half Marathon
Half Marathons in Washington
Washington currently has 54 upcoming half marathons with a confirmed date listed in RaceRove. Seattle, North Bend, Tacoma and Kirkland have the largest concentration of events.
November (8), May (7) and September (7) are the busiest months on the calendar right now. Another 30 annual half marathons are waiting for next year's date to be announced.
- Upcoming, date confirmed
- 54
- Active listings
- 84
- Cities with races
- 35
More ways to browse Washington
Upcoming half marathons in Washington
All 54 with a confirmed date, soonest first.
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UW Medicine Seattle Marathon and Half MarathonSeattle, WAFull MarathonHalf Marathon (RunWalkVirtual +1 more
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Tacoma City Marathon / Half / Ghost / 10K / 5K / 1KTacoma, WAMarathonHalf Marathon10K5K +1 more ~2,000 runners
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Windermere Marathon, Half Marathon, 10K & 5KSpokane, WAMarathonHalf Marathon10K5K +1 more ~1,500 runners
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North Olympic Discovery Marathon (5K / 10K/ Half / Full / Relay / Kids Marathon)Port Angeles, WAMarathonHalf Marathon5K10K +1 more ~495 runners
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Seattle Marathon Summer EventsSeattle, WA10K Run/Walk5K / 10K Bundle5K Run/WalkAmbassador - 10K +3 more
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Fall - Mud Mountain Dam Marathon & Half MarathonEnumclaw, WAMarathonHalf Marathon10K5K ~58 runners
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Light at the End of the Tunnel Marathon (Tunnel Light Marathon)North Bend, WAMarathonHalf Marathon ~800 runners
Dates come from each race's own listing. Always confirm on the organiser's site before you book travel.
Largest half marathon events in Washington
By estimated field size across all distances at the event.
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Poulsbo Half Marathon & 10kPoulsbo, WA Usually held in October · next date not announcedHalf Marathon10K ~3,850 runners
When half marathons happen in Washington
- January
- 1 upcoming race
- February
- 2 upcoming races
- March
- 5 upcoming races
- April
- 3 upcoming races
- May
- 7 upcoming races
- June
- 3 upcoming races
- July
- 4 upcoming races
- August
- 5 upcoming races
- September
- 7 upcoming races
- October
- 4 upcoming races
- November
- 8 upcoming races
- December
- 5 upcoming races
Washington cities with the most half marathons
- Seattle
- 19 upcoming races
- North Bend
- 3 upcoming races
- Tacoma
- 3 upcoming races
- Kirkland
- 2 upcoming races
- Vancouver
- 2 upcoming races
- Bellingham
- 2 upcoming races
- Everett
- 2 upcoming races
- Maple Valley
- 2 upcoming races
Running in Washington cities
Annual events awaiting their next date
These half marathons are held every year, but the next date isn't in the listing yet. The month shown is when each is usually held.
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Poulsbo Half Marathon & 10kPoulsbo, WA Usually held in October · next date not announcedHalf Marathon10K ~3,850 runners
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Spokane MarathonSpokane, WA Usually held in October · next date not announcedMarathonHalf10K ~2,500 runners
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Girlfriends Run for a Cure Half Marathon, 10K & 6KVancouver, WA Usually held in October · next date not announcedHalf Marathon10K6K ~1,500 runners
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Tacoma Narrows Half Marathon, 10K & 5KTacoma, WA Usually held in August · next date not announcedHalf Marathon10K5K ~1,200 runners
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Tunnel Light Marathon & Half MarathonNorth Bend, WA Usually held in September · next date not announcedMarathonTunnel Light Half Marathon ~831 runners
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Tunnel Vision Marathon & Half MarathonSnoqualmie Pass, WA Usually held in August · next date not announcedMarathonHalf Marathon ~768 runners
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Lake Washington Half MarathonKirkland, WA Usually held in October · next date not announcedHalf Marathon ~708 runners
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Cascade Express Marathon & Half MarathonNorth Bend, WA Usually held in September · next date not announcedMarathonHalf Marathon ~545 runners
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Falla Walla Half Marathon, 10K & Heroes 5K RunWalla Walla, WA Usually held in October · next date not announcedHalf Marathon5K10K ~300 runners
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Leavenworth Marathon & Half MarathonLeavenworth, WA Usually held in October · next date not announcedHalf MarathonMarathon ~256 runners
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Puyallup Valley Half Marathon and 10KPuyallup, WA Usually held in September · next date not announcedHalf Marathon13.6 Miles10K ~200 runners
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Skagit Flats Marathon, Half & 5kBurlington, WA Usually held in September · next date not announcedMarathonHalf Marathon5K10K ~112 runners
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Chamna ChaseRichland, WA Usually held in October · next date not announced1/2 Marathon10K6K ~105 runners
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FidalgoAnacortes, WA Usually held in September · next date not announcedMarathonHalf-Marathon5 MileKids Race ~38 runners
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Anacortes Half Marathon & 5kAnacortes, WA Usually held in September · next date not announcedHalf Marathon5K
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Bagel Run 5K/10K/13.1 SEATTLESeattle, WA Usually held in August · next date not announcedHalf Marathon5K10K1 Mile
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Children of the Sun Half MarathonSpokane, WA Usually held in August · next date not announcedHalf Marathon5K12K
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Colbert Autumn Classic Half Marathon & 4-Mile LoopColbert, WA Usually held in September · next date not announcedHalf Marathon5K4 Miles
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Jump Off Joe MarathonKennewick, WA Usually held in September · next date not announcedMarathon1/2 Marathon10k
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National Chocolate Day: Run for Chocolates 5K/10K/13.1 SEATTLESeattle, WA Usually held in September · next date not announcedHalf Marathon5K10K1 Mile
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Oktoberfest Run 5K/10K/13.1 SEATTLESeattle, WA Usually held in September · next date not announcedHalf Marathon5K10K1 Mile
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OVERCOMER 5K & 13.1 Mile Half MarathonPasco, WA Usually held in September · next date not announcedHalf Marathon5K
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Run for Breast Cancer 5K/10K/13.1 SEATTLESeattle, WA Usually held in August · next date not announcedHalf Marathon5K10K1 Mile
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Run for Coffee Lovers 5K/10K/13.1 SEATTLESeattle, WA Usually held in July · next date not announcedHalf Marathon5K10K1 Mile
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Run for Donuts 5K/10K/13.1 SEATTLESeattle, WA Usually held in July · next date not announcedHalf Marathon5K10K1 Mile
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Run for Mental Health 5K/10K/13.1 SEATTLESeattle, WA Usually held in September · next date not announcedHalf Marathon5K10K1 Mile
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Run for PB& J 5K/10K/13.1 SEATTLESeattle, WA Usually held in August · next date not announcedHalf Marathon5K10K1 Mile
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Sloth Run 5K/10K/13.1 SEATTLESeattle, WA Usually held in August · next date not announcedHalf Marathon5K10K1 Mile
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Sun City Barry James Memorial 5K and Half MarathonYakima, WA Usually held in October · next date not announcedHalf Marathon5K
Half Marathons in nearby states
Guides from the RaceRove blog
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 8 min read How to Choose the Best Half Marathon for a PR, Racecation or 50-State Challenge The best half marathon depends on what you want from it. How to choose a course for a personal record, a race worth travelling for, or an efficient stop on a 50-state challenge.
- 4 min read Diplo's Run Club 2026-27: Every City, Date and Course Diplo's Run Club is a 5K with a post-race concert. Every US date for 2026-27 (San Francisco, New York, Los Angeles, San Diego and Phoenix), start times and courses.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Half Marathons in Washington: common questions
- How many half marathons are there in Washington?
- RaceRove currently lists 54 upcoming half marathons in Washington with a confirmed date, plus 30 annual events whose next date hasn't been announced yet.
- How long is a half marathon?
- A half marathon is 13.1 miles (21.1 kilometres).
- Which Washington cities have the most half marathons?
- By upcoming events listed in RaceRove: Seattle (19), North Bend (3), Tacoma (3), Kirkland (2) and Vancouver (2).
- When is half marathon season in Washington?
- Of the upcoming half marathons listed, the busiest months are November (8), May (7) and September (7).
- What is the biggest half marathon in Washington?
- By estimated field size, the largest event with a half marathon listed in Washington is the Jack & Jill Marathon & Half, with about 17,124 runners across all of its distances.
Search every half marathon in Washington
Filter by month, course profile and field size, save races to a shortlist and compare them side by side in the interactive search.