| Brad Williams's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Blue Sky Trail Marathon 2025 (Trail Marathon) | Colorado, US | 43 | Saturday, October 18, 2025 | 04:45:29.00 |
| Red Feather Trail Jamboree 2025 50 Mile | Colorado, US | 43 | Friday, September 26, 2025 | 13:07:06.00 |
| Blue Sky Marathon & Half 2023 (Trail Marathon) | Colorado, US | 41 | Saturday, October 21, 2023 | 04:37:40.00 |
| Staunton Rocks! Marathon & Half 2023 (Marathon) | Colorado, US | 41 | Saturday, August 26, 2023 | 05:13:18.00 |
| The Bear 100 2017 | Colorado, US | 35 | Friday, September 22, 2017 | DNF |