Race calendar · Ultra
Find an Ultra anywhere in the US. 230 upcoming ultramarathons with dates, entry fees, start-line maps, and - for the ones with published results - what the field actually ran.
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 Oct 16, 2026.
By the numbers
The ultramarathons that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
Which weekends are busiest, what the fields run, and every Ultra on the calendar, one month at a time.
Across the 93 Ultra editions on RunSesh with published results, the median finisher ran 6:45:04, and the median winning time was 4:30:11. So an Ultra under 6:45:04 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.
Almost certainly not. In a typical Ultra on RunSesh the last recorded finisher came in around 9:28:46, well over an hour behind the median of 6:45:04. Real fields have a long tail of walkers and run-walkers behind the middle of the pack, and they are far slower than most first-timers expect.
The median Ultra on RunSesh finished 38 runners, across 93 editions with published results. Most ultramarathons are far smaller than the big-city events people picture, which means less crowding at the start and a friendlier field.
Yes, 64 races around the United States get you off the pavement: 59 are trail races, and 5 mix road and trail.
October is the busiest month for ultramarathons, with 38 of the 230 upcoming. If your training block is flexible, aiming at the busiest month gives you the most races to pick from and the best chance of finding one close to home.
