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.
By the numbers
The Biggest and Longest-Running
The September 5K races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
Common Questions About Running a September 5K in Louisiana
When in September are most 5K races held?
The busiest weekend in Louisiana is September 26 and September 27, with 9 5K races on those two days, and the single busiest day is Saturday, September 26 with 8. Every one of them is on a Saturday or a Sunday.
When should I sign up for a September 5K?
As early as you can. 2 of these September 5K races already have a price increase on the calendar, and 7 are open for entry right now. Another 2 have published an opening date and have not opened yet.
How much does a September 5K cost to enter?
The typical entry is $30, with paid entries running from $25 up to $69, 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 5K time?
Across the 4 of these September 5K races with published results from past editions, the median finisher ran 38:13, and the median winning time was 18:55. So anything under 38:13 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 September 5K field?
The median one finished 281 runners, across the 4 of these September 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 1:26:57.
5K Races in Other Months
August and October sit either side of September, which is where most people look next when a date does not fit.