When in October are most 5K races held?
The busiest weekend in Washington is October 9 and October 10, with 5 of them, 3 of those on Saturday, October 9. Every one of them is on a Saturday or a Sunday.
Race calendar · October 2027 · Washington
5K Races in Washington in October 2027
Every 5K in Washington in October 2027, all 12 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
What the field actually runs
October 5K Races, By the Numbers
36:12Median finish time
20:11Median winning time
129Median field size
6October 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 October
The October Race Weekends
5K races are not spread evenly across October. 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 October 5K in Washington, from the most recent published results.
Washington 5K Races by City in October
All 5K Runs in Washington in October
12 total Sun, Oct 3, 2027F Cancer 5k Run & Walk Tacoma, WARegistration opens Sep 1, 2027From $40Details Sat, Oct 9, 2027Running Scared 5K/13K - Portland (Washougal) Washougal, WARegistration opens Mar 18, 2027From $25Details Sat, Oct 9, 2027Badger South Prediction 5K Richland, WARegistration opens Apr 26, 2027From $25Details Sat, Oct 9, 2027Running Scared 5K/13K - Spokane Spokane, WARegistration opens Aug 16, 2027From $35Details Sun, Oct 10, 2027The Spokane Marathon Spokane, WAFrom $35Details Sun, Oct 10, 2027Running Scared 5K/13K - Richland Richland, WARegistration opens Aug 16, 2027From $30Details Sat, Oct 16, 2027Bethlehem Lutheran Fall Fest Richland, WARegistration opens Aug 20, 2027From $15Details Sat, Oct 16, 2027Harvest Hustle 5k/10k Othello, WARegistration opens Aug 30, 2027From $35Details Sun, Oct 17, 2027Running Scared 5K/13K - Seattle Seattle, WAFrom $25Details Sun, Oct 17, 20272027 The Snohomish River Run Marathon, Half Marathon, 10K and 5K Snohomish, WAFrom $55Details Sat, Oct 23, 2027West Seattle Monster Dash 2026 Seattle, WARegistration opens Aug 31, 2027From $35Details Sun, Oct 24, 2027Tri-Cities Marathon Richland, WARegistration opens Jan 1, 2027From $25Details
Common Questions About Running an October 5K in Washington
What is a good 5K time?
Across the 6 of these October 5K races with published results from past editions, the median finisher ran 36:12, and the median winning time was 20:11. So anything under 36:12 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 October 5K field?
The median one finished 129 runners, across the 6 of these October 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 1:19:41.
Are there trail 5K races in Washington in October?
Yes, one race around Washington gets you off the pavement: 1 is a trail race.