Race calendar · January 2027
461 5K races across the US in January 2027, sorted by date. Which weekends are busiest, what the fields actually run, entry fees, and where each one starts.
461 5K races in January 2027
What the field actually runs
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 January
5K races do not spread evenly across January. The busiest weekend is January 16 and January 17, with 101 of them. Another 72 fall on a weekday.
By the numbers
The January 5K races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
It is a lean month for the 5K. January carries 461, against 3,345 in October and 163 in August, the quietest. A January race is worth planning around rather than picking late, because the one that fits your training block may be the only one within reach.
The busiest weekend is January 16 and January 17, with 101 5K races on those two days, and the single busiest day is Saturday, January 30 with 88. Another 72 fall on a weekday, which is worth knowing if you are traveling for one.
As early as you can. 213 of these January 5K races already have a price increase on the calendar, and 422 are open for entry right now. Another 38 have published an opening date and have not opened yet.
The typical entry is $30, with paid entries running from $5 up to $500, and 10 that are free to enter. Entry fees climb as race day gets closer, so the same race is usually cheapest the week it opens.
Across the 235 of these January 5K races with published results from past editions, the median finisher ran 36:01, and the median winning time was 18:44. So anything under 36:01 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.
The median one finished 140 runners, across the 235 of these January 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 1:07:04.
Florida has 97, California has 66, Texas has 60, Georgia has 21, New Jersey has 15. If you are willing to travel, those are the states where a January weekend gives you the most to choose from.
Yes, 16 races around the United States get you off the pavement: 12 are trail races, and 4 mix road and trail. Surfaces are not always published, so it is worth checking a specific race before you register.
December and February sit either side of January, which is where most people look next when a date does not fit.
