| Joseph Harter's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Pacific Crest Trail 50 -2024 (PCT 50) (50 miler) | California, US | 35 | Saturday, May 11, 2024 | DNF |
| Oriflamme 50k - 2024 (50k) | California, US | 35 | Saturday, April 13, 2024 | 05:37:16.00 |
| The Ranch 2024 (50k) | California, US | 35 | Saturday, February 10, 2024 | 05:11:34.00 |
| ABC 50 (Anza Borrego 50) | California, US | 34 | Saturday, December 2, 2023 | 12:58:07.00 |
| The Peak 2023 (50K) | California, US | 34 | Saturday, July 15, 2023 | 07:30:17.00 |