| Julian Jamison's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Hardrock 100 2021 | District of Columbia, US | 48 | Friday, July 16, 2021 | DNF |
| Hardrock 100 2017 | District of Columbia, US | 44 | Friday, July 14, 2017 | 38:19:10.00 |
| 2017 Running Up For Air | District of Columbia, US | 44 | Saturday, February 11, 2017 | 09:38:00.00 |
| Hardrock 100 2015 | District of Columbia, US | 42 | Friday, July 10, 2015 | 43:06:26.00 |
| Hardrock 100 2013 | District of Columbia, US | 40 | Friday, July 12, 2013 | DNF |
| Hardrock 100 2012 | Massachusetts, US | 39 | Friday, July 13, 2012 | 38:49:00.00 |
| Hardrock 100 2011 | Massachusetts, US | 38 | Friday, July 15, 2011 | 39:02:00.00 |
| Hardrock 100 2009 | California, US | 36 | Friday, July 10, 2009 | 39:31:58.00 |