| Keith Knipling's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Hardrock 100 2021 | Virginia, US | 45 | Friday, July 16, 2021 | 38:51:00.00 |
| Hardrock 100 2017 | Virginia, US | 41 | Friday, July 14, 2017 | 46:21:16.00 |
| Hardrock 100 2008 | Illinois, US | 32 | Friday, July 11, 2008 | 46:42:23.00 |
| Hardrock 100 2003 | Illinois, US | 27 | Friday, July 11, 2003 | 35:47:28.00 |
| Hardrock 100 2001 | Virginia, US | 25 | Friday, July 13, 2001 | DNF |