| Bill Losey's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Red Feather Trail Jamboree 2022 (50K) | Colorado, US | 50 | Saturday, September 17, 2022 | 07:51:11.00 |
| 2018 High Lonesome 100 | 46 | Friday, August 3, 2018 | DNF | |
| Never Summer 100k 2016 | CO | 44 | Saturday, July 23, 2016 | 22:03:57.00 |
| Never Summer 100k 2015 | CO | 43 | Saturday, July 25, 2015 | DNF |
| The Bear 100 2014 | Colorado, US | 42 | Friday, September 26, 2014 | DNF |
| 2014 Golden Gate Dirty 30 (50K) | 42 | Saturday, May 31, 2014 | Not yet started | |
| The Bear 100 2013 | Colorado, US | 41 | Friday, September 27, 2013 | 35:18:00.00 |
| Hardrock 100 2012 | Colorado, US | 41 | Friday, July 13, 2012 | 47:40:00.00 |
| The Bear 100 2009 | Ohio, US | 37 | Friday, September 25, 2009 | 32:56:00.00 |
| Hardrock 100 2008 | Ohio, US | 37 | Friday, July 11, 2008 | DNF |
| Hardrock 100 2005 | Kentucky, US | 34 | Friday, July 8, 2005 | DNF |
| Hardrock 100 2004 | Ohio, US | 33 | Friday, July 9, 2004 | 45:39:30.00 |