| Mark Wilcox's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Red Feather Trail Jamboree 2025 50 Mile | Colorado, US | 54 | Friday, September 26, 2025 | 14:14:26.00 |
| Staunton Rocks! Marathon & Half 2025 (Marathon) | Colorado, US | 54 | Saturday, August 23, 2025 | 06:16:52.00 |
| Never Summer 100k (2024) (100k) | Colorado, US | 53 | Saturday, July 27, 2024 | 22:15:57.00 |
| Quad Rock 2021 (Quad Rock 50) | Colorado, US | 49 | Saturday, May 8, 2021 | 13:04:00.00 |
| 2017 Golden Gate Dirty 30 (50K) | Colorado, US | 46 | Saturday, June 3, 2017 | 07:50:19.91 |