| David Horton's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Hardrock 100 2000 | 50 | Friday, July 7, 2000 | 30:12:23.00 | |
| Hardrock 100 1998 | Virginia, US | 48 | Friday, July 10, 1998 | 30:27:00.00 |
| Hardrock 100 1996 | Virginia, US | 46 | Friday, July 12, 1996 | 31:40:59.00 |
| Hardrock 100 1994 | Virginia, US | 44 | Friday, July 8, 1994 | DNF |
| Hardrock 100 1993 | Virginia, US | 43 | Friday, July 9, 1993 | 29:35:00.00 |
| Hardrock 100 1992 | Virginia, US | 42 | Friday, July 10, 1992 | 32:24:00.00 |