When in May are most 5K races held?
The busiest weekend in Washington is May 15 and May 16, with 4 5K races on those two days, and the single busiest day is Saturday, May 8 with 3. Every one of them is on a Saturday or a Sunday.
Race calendar · May 2027 · Washington
May 2027 5K Races in Washington
Every 5K in Washington in May 2027, all 13 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
13 5K races in May 2027
What the field actually runs
May 5K Races, By the Numbers
36:08Median finish time
18:06Median winning time
231Median field size
7May 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 Sep 22, 2026.
When in May
The May Race Weekends
5K races do not spread evenly across May. The busiest weekend is May 15 and May 16, with 4 of them.
By the numbers
The Biggest and Longest-Running
The May 5K races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
May 5K Races by City
Soonest 5K Races in May
13 total Sat, May 1, 2027Tacoma City Marathon / Half / Ghost / 10K / 5K / 1K Tacoma, WAFrom $50Details Sat, May 1, 2027ATFS! Garage Sale 5K Auburn, WAFrom $15Details Sun, May 2, 2027Kirkland Half Marathon & 5K Kirkland, WARegistration closedFrom $40Details Sat, May 8, 2027Bainbridge Island Parks & Trails Foundation Trillium Trail Run Bainbridge Island, WARegistration opens Mar 8, 2027From $30Details Sat, May 8, 2027K is for Kindness 5 K and 1K Run Richland, WAFrom $35Details Sat, May 8, 2027Run for Chocolate 5k/10k/13.1 SEATTLE Seattle, WAFrom $30Register Sat, May 15, 2027Inspiring Hope Run 5k/10k Mukilteo, WARegistration closedFrom $30Details Sat, May 15, 202740th Annual Bay View Women's Run Mount Vernon, WAFrom $25Details Sun, May 16, 2027Windermere Marathon Spokane, WAFrom $35Details Sun, May 16, 2027Seattle Atatürk Unity Run Seattle, WARegistration opens May 16, 2027From $35Details 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
Common Questions About Running a May 5K in Washington
When should I sign up for a May 5K?
As early as you can. 9 of these May 5K races already have a price increase on the calendar, and 7 are open for entry right now. Another 6 have published an opening date and have not opened yet.
How much does a May 5K cost to enter?
The typical entry is $35, with paid entries running from $15 up to $50. Entry fees climb as race day gets closer, so the same race is usually cheapest the week it opens.
What is a good 5K time?
Across the 7 of these May 5K races with published results from past editions, the median finisher ran 36:08, and the median winning time was 18:06. So anything under 36:08 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 231 runners, across the 7 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 1:17:27.
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. Surfaces are not always published, so it is worth checking a specific race before you register.
5K Races in Other Months
April and June sit either side of May, which is where most people look next when a date does not fit.