| Chris Gunderson's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Staunton Rocks! Marathon & Half 2025 (Half Marathon) | Colorado, US | 52 | Saturday, August 23, 2025 | 05:33:26.00 |
| Red Feather Trail Jamboree 2024 Half (Half Marathon) | Colorado, US | 51 | Sunday, September 22, 2024 | 05:23:40.00 |
| Blue Sky Marathon & Half 2023 (Trail Marathon) | Colorado, US | 50 | Saturday, October 21, 2023 | DNF |