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.
Oct 2 - Oct 31
Oct 9 - Oct 102
Oct 16 - Oct 172
Oct 30 - Oct 312
By the numbers
The Biggest and Longest-Running
The October 5K races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
Common Questions About Running an October 5K in Pennsylvania
What is a good 5K time?
Across the 4 of these October 5K races with published results from past editions, the median finisher ran 34:40, and the median winning time was 20:51. So anything under 34:40 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 115 runners, across the 4 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 58:10.
Are there trail 5K races in Pennsylvania in October?
Yes, one race around Pennsylvania gets you off the pavement: 1 mixes road and trail.