| Jack Jewell's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| 2019 Silverton Ultra Marathon (55K) | Colorado, US | 65 | Saturday, August 3, 2019 | 13:50:12.00 |
| The Bear 100 2013 | Colorado, US | 59 | Friday, September 27, 2013 | DNF |
| Hardrock 100 2012 | Colorado, US | 59 | Friday, July 13, 2012 | DNF |
| Hardrock 100 2011 | Colorado, US | 57 | Friday, July 15, 2011 | DNF |
| Hardrock 100 2008 | Colorado, US | 55 | Friday, July 11, 2008 | 46:27:36.00 |