When in May are most 10K races held?
The busiest weekend in Washington is May 8 and May 9, with 5 of them, 4 of those on Saturday, May 8. Every one of them is on a Saturday or a Sunday.
Race calendar · May 2027 · Washington
10K Races in Washington in May 2027
Every 10K in Washington in May 2027, all 16 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
What the field actually runs
May 10K Races, By the Numbers
1:04:33Median finish time
41:57Median winning time
75Median field size
9May 10K races with published results
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 Nov 12, 2026.
When in May
The May Race Weekends
10K races are not spread evenly across May. Here is how the calendar actually falls, weekend by weekend, which is the part worth knowing before you book a trip or plan a taper around one.
By the numbers
The Biggest Field
The largest field of any May 10K in Washington, from the most recent published results.
Washington 10K Races by City in May
All 10K Runs in Washington in May
16 total Sat, May 1, 2027Never Say Never 10K Tieton, WAFrom $90Details Sat, May 1, 2027Tacoma City Marathon / Half / Ghost / 10K / 5K / 1K Tacoma, WAFrom $55Details Sat, May 1, 2027Luau 5K, 10K, & 13.1M at Everett, WA (18) Everett, WAFrom $45Details Sat, May 8, 2027Bainbridge Island Parks & Trails Foundation Trillium Trail Run Bainbridge Island, WARegistration opens Mar 8, 2027From $35Details Sat, May 8, 2027Snohomish Women's Run Everett, WAFrom $77Details Sat, May 8, 2027Medal Madness 5K, 10K, & 13.1M at Everett, WA (19) Everett, WAFrom $45Details Sat, May 8, 2027Run for Chocolate 5k/10k/13.1 SEATTLE Seattle, WAFrom $42Register Sun, May 9, 2027Super Mom 5K/10K/Half Marathon - Portland (Washougal) Washougal, WARegistration opens Mar 11, 2027From $35Details Sat, May 15, 2027Inspiring Hope Run 5k/10k Mukilteo, WARegistration closedFrom $35Details Sat, May 15, 202740th Annual Bay View Women's Run Mount Vernon, WAFrom $35Details Sat, May 15, 2027Pirate 5K, 10K, 13.1M at Vancouver, WA (20) Vancouver, WAFrom $45Register Sun, May 16, 2027Windermere Marathon Spokane, WAFrom $55Details Sun, May 16, 2027Seattle Atatürk Unity Run Seattle, WARegistration opens May 16, 2027From $40Details Sat, May 29, 2027Big River Race Pasco, WARegistration opens Dec 31From $35Details Sat, May 29, 2027SuperHeroes Run SEATTLE Seattle, WAFrom $42Register Sat, May 29, 2027Medal Madness 5K, 10K, 13.1M at Vancouver, WA (22) Vancouver, WAFrom $45Register
Common Questions About Running a May 10K in Washington
What is a good 10K time?
Across the 9 of these May 10K races with published results from past editions, the median finisher ran 1:04:33, and the median winning time was 41:57. So anything under 1:04:33 puts you in the faster half of a typical field. That is the middle of these RunSignup fields, walkers and charity entrants included, not a national average.
How big is a typical May 10K field?
The median one finished 75 runners, across the 9 of these May 10K races with published results from past editions. Most are far smaller than the big-city events people picture, which means less crowding at the start and a friendlier field, with a last recorded finisher at 1:44:43.
Are there trail 10K races in Washington in May?
Yes, 2 races around Washington get you off the pavement: 1 is a trail race, and 1 mixes road and trail.