| Bruce Nelson's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| The Bear 100 2022 | Utah, US | 69 | Friday, September 23, 2022 | DNF |
| The Bear 100 2021 | Utah, US | 68 | Saturday, September 25, 2021 | DNF |
| The Bear 100 2019 | Utah, US | 66 | Friday, September 27, 2019 | DNF |
| The Bear 100 2018 | Utah, US | 65 | Friday, September 28, 2018 | DNF |
| The Bear 100 2016 | Utah, US | 63 | Friday, September 23, 2016 | DNF |
| The Bear 100 2015 | Utah, US | 62 | Friday, September 25, 2015 | DNF |
| The Bear 100 2014 | Utah, US | 61 | Friday, September 26, 2014 | DNF |
| The Bear 100 2013 | Utah, US | 60 | Friday, September 27, 2013 | DNF |
| The Bear 100 2010 | Utah, US | 57 | Friday, September 24, 2010 | 35:31:01.00 |
| The Bear 100 2009 | Utah, US | 56 | Friday, September 25, 2009 | DNF |
| The Bear 100 2008 | Utah, US | 55 | Friday, September 26, 2008 | DNF |