| Zachary Frederick's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Laurel Highlands FALL CLASSIC 2025 (50K) | Pennsylvania, US | 44 | Saturday, September 27, 2025 | 07:39:32.00 |
| Laurel Highlands FALL CLASSIC 2024 (50K) | Colorado, US | 43 | Saturday, October 19, 2024 | Not yet started |
| 2021 Silverton Ultra Dirty (60K) | Colorado, US | 40 | Saturday, August 7, 2021 | 12:47:06.00 |