| John Kerschbaum's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| The Ranch 2025 (Half Marathon) | California, US | 49 | Saturday, February 15, 2025 | 02:33:58.00 |
| ABC 50 (Anza Borrego Cuyamaca 50) (50 Miler) | California, US | 49 | Saturday, December 7, 2024 | Not yet started |
| Old West Trail Runs 2024 (50k) | California, US | 49 | Saturday, March 16, 2024 | 05:30:00.00 |
| The Ranch 2024 (Half Marathon) | California, US | 48 | Saturday, February 10, 2024 | 02:25:01.00 |