Kostelnik, Jack
United StatesManBorn 19992023 – 2025Runner id 2085143
Events
4
2 race dates
Best pace
8.208
km/h · 2025
Best finish
18th
of 66 · 2025
Distance raced
278
km · splits not double-counted
Both results, on one pace scale
2 of 4 results · km/h
7.212 km/hOct 2023 · 50km
8.208 km/hNov 2025 · 50mi
Both results on one pace scale, with no line drawn between them — these are different race formats, so the gap is mostly the race rather than the runner.
2 results are not on this chart. They are counted in every statistic above and listed in full below — backyard ultras carry a lap count instead of a pace, which is the number that means something in that format.
Results
| Date | Event | Distance | Result | Pace km/h | Placing |
|---|---|---|---|---|---|
| 2023-10-08 | 50km | 6:55:59 h | 7.212 | 9/33 | |
| 2024-08-31 | Last Man Standing UltramarathonUnited States | 39h | 73.766 km | 11laps | 66/136 |
| 2025-08-30 | Last Man Standing UltramarathonUnited States | 43h | 73.766 km | 11laps | 78/121 |
| 2025-11-15 | 50mi | 9:48:11 h | 8.208 | 18/66 |