When in October are most 10K races held?
The busiest weekend in Washington is October 10 and October 11, with 10 10K races on those two days, and the single busiest day is Saturday, October 17 with 6. Every one of them is on a Saturday or a Sunday.
Race calendar · October 2026 · Washington
October 2026 10K Races in Washington
Every 10K in Washington in October 2026, all 36 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
36 10K races in October 2026
What the field actually runs
October 10K Races, By the Numbers
1:02:58Median finish time
40:32Median winning time
93Median field size
18October 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 Sep 22, 2026.
When in October
The October Race Weekends
10K races do not spread evenly across October. The busiest weekend is October 10 and October 11, with 10 of them.
By the numbers
The Biggest and Longest-Running
The October 10K races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
October 10K Races by City
Soonest 10K Races in October
36 total Sat, Oct 3, 2026Falla Walla Half Marathon, 10K & Heroes 5K Run Walla Walla, WAFrom $40Details Sat, Oct 3, 2026Longview Early Edition Rotary Harvest Classic Longview, WAFrom $10Details Sat, Oct 3, 2026Spruce Railroad Run/Walk Port Angeles, WAFrom $40Details Sat, Oct 3, 2026Run for the Gnomes Half Marathon & 5K Maple Valley, WAFrom $44Details Sun, Oct 4, 2026Poulsbo Half Marathon & 10k Poulsbo, WAFrom $78Details Sat, Oct 10, 2026Haunted 5K, 10K & 13.1M at Olympia, WA (41) Olympia, WAFrom $30Details Sat, Oct 10, 2026Haunted 5K, 10K, & 13.1M at Everett WA (41) Everett, WAFrom $30Details Sat, Oct 10, 2026Cookie Run 5K/10K/13.1 SEATTLE Seattle, WAFrom $30Register Sat, Oct 10, 2026Coffee Lovers Run 5K/10K/13.1 SEATTLE Seattle, WAFrom $30Register Sat, Oct 10, 2026Haunted 5K, 10K & 13.1M at Camas, WA (41) Camas, WAFrom $30Register Sun, Oct 11, 20262026 The Snohomish River Run Marathon, Half Marathon, 10K and 5K Snohomish, WAFrom $55Details Sun, Oct 11, 2026The Spokane Marathon Spokane, WAFrom $55Details
Common Questions About Running an October 10K in Washington
When should I sign up for an October 10K?
As early as you can. 9 of these October 10K races already have a price increase on the calendar, and 36 are open for entry right now.
How much does an October 10K cost to enter?
The typical entry is $35, with paid entries running from $10 up to $78. Entry fees climb as race day gets closer, so the same race is usually cheapest the week it opens.
What is a good 10K time?
Across the 18 of these October 10K races with published results from past editions, the median finisher ran 1:02:58, and the median winning time was 40:32. So anything under 1:02:58 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 10K field?
The median one finished 93 runners, across the 18 of these October 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 1:46:01.
Are there trail 10K races in Washington in October?
Yes, 4 races around Washington get you off the pavement: 4 mix road and trail. Surfaces are not always published, so it is worth checking a specific race before you register.
10K Races in Other Months
September and November sit either side of October, which is where most people look next when a date does not fit.