| Jeffery Alexander's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| The Ranch 2026 (Half Marathon) | California, US | 74 | Saturday, February 14, 2026 | 03:53:50.00 |
| Old West Trail Runs 2025 (Half Marathon) | California, US | 73 | Saturday, March 15, 2025 | Not yet started |
| The Ranch 2025 (Half Marathon) | California, US | 73 | Saturday, February 15, 2025 | 03:37:17.00 |
| The Peak 2024 (Half Marathon) | California, US | 72 | Saturday, July 13, 2024 | Not yet started |
| The Ranch 2024 (Half Marathon) | California, US | 72 | Saturday, February 10, 2024 | 03:33:26.00 |