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 3 and October 4, with 3 of them. Another 1 fall on a weekday.
Oct 3 – Oct 43
Oct 10 – Oct 113
Oct 17 – Oct 181
Oct 24 – Oct 252
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.
Common Questions About Running an October 10K in Oregon
When in October are most 10K races held?
The busiest weekend in Oregon is October 3 and October 4, with 3 10K races on those two days, and the single busiest day is Sunday, October 4 with 2. Another 1 fall on a weekday, which is worth knowing if you are traveling for one.
When should I sign up for an October 10K?
As early as you can. 4 of these October 10K races already have a price increase on the calendar, and 10 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 $7 up to $50, and 1 that are free to enter. 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 5 of these October 10K races with published results from past editions, the median finisher ran 58:36, and the median winning time was 36:08. So anything under 58:36 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 96 runners, across the 5 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 1:42:40.
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.