| Erik Kowalczyk's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Never Summer 60k (2024) | Colorado, US | 29 | Friday, July 26, 2024 | 09:30:57.00 |
| Quad Rock 2024 (Quad Rock 25) | Colorado, US | 29 | Saturday, May 11, 2024 | 04:51:55.00 |
| Red Feather Trail Jamboree 2023 50K (50K) | Colorado, US | 28 | Friday, September 22, 2023 | 05:39:21.00 |
| Never Summer 60k (2023) | Colorado, US | 28 | Friday, July 28, 2023 | 09:09:07.00 |