When in May are most 5K races held?
The busiest weekend in Washington is May 8 and May 9, with 7 of them, 6 of those on Saturday, May 8. Every one of them is on a Saturday or a Sunday.
Race calendar · May 2027 · Washington
5K Races in Washington in May 2027
Every 5K in Washington in May 2027, all 24 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
What the field actually runs
May 5K Races, By the Numbers
38:16Median finish time
20:33Median winning time
115Median field size
12May 5K 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
5K 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 5K in Washington, from the most recent published results.
Washington 5K Races by City in May
All 5K Runs in Washington in May
24 total Sat, May 1, 2027Tacoma City Marathon / Half / Ghost / 10K / 5K / 1K Tacoma, WAFrom $50Details Sat, May 1, 2027Luau 5K, 10K, & 13.1M at Everett, WA (18) Everett, WAFrom $30Details Sat, May 1, 2027ATFS! Garage Sale 5K Auburn, WAFrom $15Details Sun, May 2, 2027Kirkland Half Marathon & 5K Kirkland, WAFrom $45Details Sun, May 2, 2027May the Course be with You 5k Seattle, WAFrom $34Details Sat, May 8, 2027Bainbridge Island Parks & Trails Foundation Trillium Trail Run Bainbridge Island, WARegistration opens Mar 8, 2027From $30Details Sat, May 8, 2027Snohomish Women's Run Everett, WAFrom $57Details Sat, May 8, 2027UW Bothell Husky 5K Bothell, WAFrom $10Details Sat, May 8, 2027K is for Kindness 5 K and 1K Run Richland, WAFrom $35Details Sat, May 8, 2027Medal Madness 5K, 10K, & 13.1M at Everett, WA (19) Everett, WAFrom $30Details Sat, May 8, 2027Run for Chocolate 5k/10k/13.1 SEATTLE Seattle, WAFrom $30Register Sun, May 9, 2027Super Mom 5K/10K/Half Marathon - Portland (Washougal) Washougal, WARegistration opens Mar 11, 2027From $30Details Sat, May 15, 2027Inspiring Hope Run 5k/10k Mukilteo, WARegistration closedFrom $30Details Sat, May 15, 2027Operation School Bell® 5K Run/Walk Redmond, WARegistration opens Feb 7, 2027From $35Details Sat, May 15, 202740th Annual Bay View Women's Run Mount Vernon, WAFrom $25Details Sat, May 15, 2027Pirate 5K, 10K, 13.1M at Vancouver, WA (20) Vancouver, WAFrom $30Register Sun, May 16, 2027Windermere Marathon Spokane, WAFrom $40Details Sun, May 16, 2027Seattle Atatürk Unity Run Seattle, WARegistration opens May 16, 2027From $35Details Sun, May 16, 2027Annie Curtis Half Marathon & 5K Anacortes, WARegistration opens Jan 4, 2027From $25Details Sun, May 23, 2027Run to END Weekend Hunger 5K Seattle, WARegistration opens Jan 6, 2027From $35Details Sat, May 29, 2027Lookin For A Cure Seattle Seattle, WAFrom $35Details Sat, May 29, 2027Big River Race Pasco, WARegistration opens Dec 31From $20Details Sat, May 29, 2027SuperHeroes Run SEATTLE Seattle, WAFrom $30Register Sat, May 29, 2027Medal Madness 5K, 10K, 13.1M at Vancouver, WA (22) Vancouver, WAFrom $30Register
Common Questions About Running a May 5K in Washington
What is a good 5K time?
Across the 12 of these May 5K races with published results from past editions, the median finisher ran 38:16, and the median winning time was 20:33. So anything under 38:16 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 5K field?
The median one finished 115 runners, across the 12 of these May 5K 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 1:14:43.
Are there trail 5K 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.