Which Washington cities have the most Half Marathon races?
Seattle (32), Everett (16), Camas (10), Olympia (9) lead the state for Half Marathon races. Those give you the most dates to choose from if your schedule is tight.
Washington · Half Marathon
Half Marathon Races in Washington
Every upcoming Half Marathon in Washington, all 125 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
125 upcoming Half Marathon races · 49 with finish-time stats
By the numbers
The Biggest and Longest-Running
The Washington races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
Half Marathon Races by City
Soonest Half Marathon Races in Washington
125 total Sat, Aug 1, 2026Run Like a Viking Virtual Challenge 5K/10K/Half Marathon Seattle, WAFrom $45Details Sat, Aug 1, 2026Ninja 5K, 10K & 13.1M at Everett, WA (31) Everett, WAFrom $30Details Sun, Aug 2, 2026Craft Classic Seattle Redmond, WAFrom $58Details Sat, Aug 8, 2026Race the Reserve Whidbey Island Coupeville, WAFrom $45Details Sat, Aug 8, 2026Ninja 5K, 10K, & 13.1M at Olympia, WA (32) Olympia, WAFrom $30Details Sat, Aug 8, 2026Ninja 5K, 10K, & 13.1M at Everett, WA (32) Everett, WAFrom $30Register Sat, Aug 8, 2026Ninja 5K, 10K, & 13.1M at Camas, WA (32) Camas, WAFrom $30Register Sun, Aug 9, 2026Tunnel Vision Marathon & Half Marathon Snoqualmie Pass, WAPricing TBARegister Sat, Aug 15, 2026Ninja 5K, 10K & 13.1M at Everett, WA (33) Everett, WAFrom $30Details Sat, Aug 15, 2026Twilight at the Bay University Place, WAFrom $48Details Sat, Aug 15, 2026Ninja 5K, 10K, 13.1M at Pasco, WA (33) Pasco, WAFrom $30Details Sat, Aug 15, 2026Run for PB& J 5K/10K/13.1 SEATTLE Seattle, WAFrom $30Register
How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Jul 27, 2026.
Common Questions About Running a Half Marathon in Washington
When are most Half Marathon races held in Washington?
August is the busiest month for Half Marathon races in Washington, with 25 of the 125, followed by September with 25. If you are flexible on the date, that is the quickest way to narrow things down.
How much do Washington Half Marathon races cost?
Entry fees for Half Marathon races here run from $15 to about $150, depending on the event and how early you register.
How early should I register for a Half Marathon in Washington?
33 of the 125 Half Marathon races in Washington already have a price increase scheduled, so entry gets more expensive the longer you leave it. Race pricing almost always steps up as the date approaches, and signing up early is usually the cheapest option.
Are Washington Half Marathon races beginner-friendly?
Yes, for the most part. Across the 48 Half Marathon races in Washington with published results, the typical median finish is around 2:16:43, which means half of every one of those fields came in slower than that. Recreational runners and walk-runners are the bulk of these fields, not the exception.
Are there trail Half Marathon races in Washington?
Yes, 3 races around Washington get you off the pavement: 1 is a trail race, and 2 mix road and trail. Surfaces are not always published, so it is worth checking a specific race before you register.