| Keith Arnold's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Blue Sky Marathon & Half 2023 (Trail Half Marathon) | Colorado, US | 53 | Saturday, October 21, 2023 | 02:49:31.00 |
| Staunton Rocks! Marathon & Half 2023 (Half Marathon) | Colorado, US | 53 | Saturday, August 26, 2023 | 02:44:21.00 |