Washington · Half Marathon
Half Marathons in Washington
Washington currently has 43 upcoming half marathons with a confirmed date listed in RaceRove. Seattle, Kirkland, Spokane and Maple Valley have the largest concentration of events.
October (12), November (7) and May (4) are the busiest months on the calendar right now. Another 39 annual half marathons are waiting for next year's date to be announced.
- Upcoming, date confirmed
- 43
- Active listings
- 82
- Cities with races
- 34
More ways to browse Washington
Upcoming half marathons in Washington
All 43 with a confirmed date, soonest first.
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UW Medicine Seattle Marathon and Half MarathonSeattle, WAHalf MarathonFULL MARATHON - SUPPORT RUNNERFull Marathon Active MilitaryFull Marathon Ambassador +2 more
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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
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Seattle Marathon Summer EventsSeattle, WA10K Run/Walk5K / 10K Bundle5K Run/WalkAmbassador - 10K +3 more
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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Seattle MarathonSeattle, WA Usually held in November · date not confirmedMarathonHalf5K ~15,000 runners
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Rock 'n' Roll Seattle HalfSeattle, WA Usually held in June · date not confirmedHalf10K ~5,000 runners
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Mercer Island Half Marathon, 10K & 5KMercer Island, WA Usually held in March · date not confirmedHalf Marathon10K5K ~4,500 runners
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Bellingham Bay MarathonWA Usually held in September · date not confirmedMarathonHalf10K5K ~3,000 runners
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Vancouver USA MarathonWA Usually held in September · date not confirmedMarathonHalf5K ~3,000 runners
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Lake Sammamish Half MarathonRedmond, WA Usually held in March · date not confirmedHalf Marathon ~2,500 runners
When half marathons happen in Washington
- January
- 1 upcoming race
- February
- 2 upcoming races
- March
- 3 upcoming races
- April
- 3 upcoming races
- May
- 4 upcoming races
- June
- 2 upcoming races
- July
- 1 upcoming race
- September
- 4 upcoming races
- October
- 12 upcoming races
- November
- 7 upcoming races
- December
- 4 upcoming races
Washington cities with the most half marathons
- Seattle
- 16 upcoming races
- Kirkland
- 2 upcoming races
- Spokane
- 2 upcoming races
- Maple Valley
- 2 upcoming races
- Snohomish
- 2 upcoming races
- Wenatchee
- 2 upcoming races
- Yakima
- 2 upcoming races
- Tacoma
- 1 upcoming race
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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Seattle MarathonSeattle, WA Usually held in November · date not confirmedMarathonHalf5K ~15,000 runners
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Rock 'n' Roll Seattle HalfSeattle, WA Usually held in June · date not confirmedHalf10K ~5,000 runners
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Mercer Island Half Marathon, 10K & 5KMercer Island, WA Usually held in March · date not confirmedHalf Marathon10K5K ~4,500 runners
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Bellingham Bay MarathonWA Usually held in September · date not confirmedMarathonHalf10K5K ~3,000 runners
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Vancouver USA MarathonWA Usually held in September · date not confirmedMarathonHalf5K ~3,000 runners
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Lake Sammamish Half MarathonRedmond, WA Usually held in March · date not confirmedHalf Marathon ~2,500 runners
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See Jane Run Seattle Women's Half Marathon & 5KSeattle, WA Usually held in July · date not confirmedHalf Marathon5KKids Run ~2,000 runners
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Snohomish Women's RunEverett, WA Usually held in May · date not confirmedHalf Marathon10K5K ~2,000 runners
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Tacoma City MarathonTacoma, WA Usually held in April · date not confirmedMarathonHalf5K ~2,000 runners
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Capital City MarathonOlympia, WA Usually held in May · date not confirmedMarathonHalf MarathonFive MileKids' Run ~1,500 runners
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Appletree MarathonVancouver, WA Usually held in August · date not confirmedMarathonHalf Marathon5K ~1,200 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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Light at the End of the Tunnel Marathon (Tunnel Light Marathon)North Bend, WA Usually held in June · date not confirmedMarathonHalf Marathon ~800 runners
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Beat the BlerchCarnation, WA Usually held in September · date not confirmedMarathonHalf Marathon10K5K ~500 runners
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Anacortes Half Marathon & 5kAnacortes, WA Usually held in September · next date not announcedHalf Marathon5K
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Backcountry RiseToutle, WA Usually held in August · next date not announced50K20 MilerHalf Marathon
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Bagel Run 5K/10K/13.1 SEATTLESeattle, WA Usually held in August · next date not announcedHalf Marathon5K10K1 Miles
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Cascade Express Marathon & Half MarathonNorth Bend, WA Usually held in September · next date not announcedMarathonHalf Marathon
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Children of the Sun Half MarathonSpokane, WA Usually held in August · next date not announcedHalf Marathon5K12K
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Fall - Mud Mountain Dam Marathon & Half MarathonEnumclaw, WA Usually held in September · next date not announcedMarathonHalf Marathon10K5K
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Iron Horse Half MarathonNorth Bend, WA Usually held in August · next date not announcedHalf Marathon5K
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Jack & Jill Marathon & HalfNorth Bend, WA Usually held in July · next date not announcedMarathonHalf Marathon
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Jump Off Joe MarathonKennewick, WA Usually held in September · next date not announcedMarathon1/2 Marathon10k
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Kirk-Wood Half MarathonKirkland, WA Usually held in August · next date not announcedHalf Marathon5K
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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 Miles
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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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Popsicle 5K/10K/Half - Portland (Washougal)Washougal, WA Usually held in August · next date not announcedHalf Marathon5K10K
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Popsicle 5K/10K/Half - RichlandRichland, WA Usually held in August · next date not announcedHalf Marathon5K10K
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Redmond Harvest Half MarathonRedmond, 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 Miles
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Run for Coffee Lovers 5K/10K/13.1 SEATTLESeattle, WA Usually held in July · next date not announcedHalf Marathon5K10K1 Miles
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Run for Donuts 5K/10K/13.1 SEATTLESeattle, WA Usually held in July · next date not announcedHalf Marathon5K10K1 Miles
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Run for Mental Health 5K/10K/13.1 SEATTLESeattle, WA Usually held in September · next date not announcedHalf Marathon5K10K1 Miles
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Run for PB& J 5K/10K/13.1 SEATTLESeattle, WA Usually held in August · next date not announcedHalf Marathon5K10K1 Miles
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Skagit Flats Marathon, Half & 5kBurlington, WA Usually held in September · next date not announcedMarathonHalf Marathon5K10K
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Sloth Run 5K/10K/13.1 SEATTLESeattle, WA Usually held in August · next date not announcedHalf Marathon5K10K1 Miles
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The Brooks Orca Half MarathonSeattle, WA Usually held in September · next date not announcedHalf Marathon5K8 Miles
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Tunnel Light Marathon & Half MarathonNorth Bend, WA Usually held in September · next date not announcedMarathonTunnel Light Half Marathon
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Tunnel Vision Marathon & Half MarathonSnoqualmie Pass, WA Usually held in August · next date not announcedMarathonHalf Marathon
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.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- 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 43 upcoming half marathons in Washington with a confirmed date, plus 39 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 (16), Kirkland (2), Spokane (2), Maple Valley (2) and Snohomish (2).
- When is half marathon season in Washington?
- Of the upcoming half marathons listed, the busiest months are October (12), November (7) and May (4).
- What is the biggest half marathon in Washington?
- By estimated field size, the largest event with a half marathon listed in Washington is the Seattle Marathon, with about 15,000 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.