Ranked from data

Largest half marathons in Washington

Half marathons in Washington ranked by finishers in each race's most recent scored edition.

races ranked

#	Race	Where	Next date	Finishers	Median finish
1	Brooks Lake Sammamish Half Marathon presented by REI2026 edition	Redmond, Washington	Mar 6, 2027	2,809	2:03:15
2	Seattle Cherry Blossom Run2026 edition	Seattle, Washington	TBA	1,359	2:08:49
3	Tacoma City Marathon / Half / Ghost / 10K / 5K / 1K2026 edition	Tacoma, Washington	May 1, 2027	1,236	2:21:59
4	The Brooks Orca Half Marathon presented by REI2026 edition	Seattle, Washington	Sep 18, 2027	1,076	2:12:00
5	Redmond Harvest Half Marathon2026 edition	Redmond, Washington	Sep 6, 2027	762	1:56:30
6	Iron Horse Half Marathon2026 edition	North Bend, Washington	Aug 29, 2027	728	2:12:59
7	Lake Washington Half Marathon2025 edition	Kirkland, Washington	Oct 17, 2026	708	2:08:20
8	The Great Ferry Race2026 edition	Bainbridge Island, Washington	Jun 6, 2027	694	2:19:47
9	North Olympic Discovery Marathon (5K / 10K/ Half / Full / Relay / Kids Marathon)2026 edition	Port Angeles, Washington	Jun 5, 2027	685	2:24:06
10	Snoqualmie Valley Half2026 edition	Carnation, Washington	Jun 19, 2027	662	2:07:24
11	Kirkland Half Marathon & 5K2026 edition	Kirkland, Washington	May 2, 2027	596	2:11:03
12	Tacoma Narrows Half Marathon / 10K / 5K2026 edition	Tacoma, Washington	TBA	550	2:13:45
13	Craft Classic Seattle2026 edition	Redmond, Washington	Aug 1, 2027	440	2:03:49
14	Santa Runs Tacoma2025 edition	Tacoma, Washington	Dec 12, 2026	412	2:09:06
15	St. Paddy's Day Run Tacoma2026 edition	Tacoma, Washington	TBA	401	2:05:02
16	JBLM Half-Marathon 5K & 1K2026 edition	Mcchord Afb, Washington	TBA	384	2:08:05
17	San Juan Island Half2026 edition	Friday Harbor, Washington	May 8, 2027	384	2:19:18
18	Beat the Blerch2026 edition	Carnation, Washington	TBA	372	2:29:18
19	Poulsbo Half Marathon & 10k2025 edition	Poulsbo, Washington	Oct 4, 2026	361	2:14:48
20	Run the River2026 edition	Kennewick, Washington	Apr 16, 2027	357	2:15:37
21	My Better Half Marathon2026 edition	Seattle, Washington	Feb 14, 2027	348	2:06:58
22	Olympia Lakefair Races - Half Marathon, 8K & 3K2026 edition	Olympia, Washington	TBA	300	2:09:57
23	Vancouver Lake Half Marathon & 4 Mile Run2026 edition	Vancouver, Washington	TBA	272	1:59:14
24	Snohomish Women's Run2026 edition	Everett, Washington	TBA	261	2:09:27
25	Fall - Mud Mountain Dam Marathon & Half Marathon2026 edition	Enumclaw, Washington	TBA	239	2:16:28
26	Girlfriends Run2025 edition	Vancouver, Washington	Oct 18, 2026	216	2:19:53
27	Spring - Mud Mountain Dam Marathon & Half Marathon2026 edition	Enumclaw, Washington	May 29, 2027	216	2:10:40
28	Tunnel Vision Marathon & Half Marathon2026 edition	Snoqualmie Pass, Washington	TBA	207	2:03:34
29	Yakima River Canyon Marathon and Half-Marathon2026 edition	Yakima, Washington	Apr 3, 2027	204	2:22:21
30	Anacortes Half Marathon & 5k2026 edition	Anacortes, Washington	TBA	190	2:15:05
31	Richland RunFest 20272025 edition	Richland, Washington	Feb 27, 2027	167	2:05:22
32	Tunnel Light Marathon & Half2026 edition	Snoqualmie Pass, Washington	TBA	158	2:16:57
33	Devil's Gulch2026 edition	Wenatchee, Washington	Jul 10, 2027	157	2:59:50
34	Run The Green2026 edition	Kent, Washington	Mar 13, 2027	157	2:02:19
35	Light at the End of the Tunnel Marathon & Half2026 edition	Snoqualmie Pass, Washington	TBA	151	2:01:02
36	2026 Backcountry Rise2026 edition	Toutle, Washington	TBA	148	3:03:03
37	Spring Classic Duathlon, Half, 10k & 5k2026 edition	Vancouver, Washington	May 1, 2027	127	2:06:48
38	Big River Race2026 edition	Pasco, Washington	May 29, 2027	125	2:02:11
39	Soaring Eagle Trail Run2026 edition	Sammamish, Washington	May 15, 2027	125	2:34:03
40	Squak Mountain Trail Run2026 edition	Issaquah, Washington	Apr 17, 2027	120	2:57:25
41	OAT Run2026 edition	Port Angeles, Washington	Apr 10, 2027	111	2:18:42
42	Devil's Gulch2025 edition	Wenatchee, Washington	TBA	106	2:59:09
43	Tiger Peak Challenge2026 edition	Issaquah, Washington	TBA	105	3:42:37
44	Echo Valley Trail Run2026 edition	Chelan, Washington	Jun 5, 2027	104	2:39:13
45	The Salty Half and 10K too!2025 edition	Seattle, Washington	Oct 17, 2026	103	2:01:53
46	Race the Reserve Whidbey Island2026 edition	Coupeville, Washington	TBA	92	2:16:07
47	Reflection Run2026 edition	Washougal, Washington	TBA	83	1:59:14
48	Children of the Sun Half Marathon2026 edition	Spokane, Washington	TBA	65	2:15:48
49	Pacific Coast Running Festival2025 edition	Long Beach, Washington	Sep 26, 2026	63	2:27:36
50	Never Say Never Half Marathon & 10K2026 edition	Tieton, Washington	TBA	58	2:12:06

More rankings in Washington