| Chuck Kroger's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Hardrock 100 2007 | Colorado, US | 61 | Friday, July 13, 2007 | DNF |
| Hardrock 100 2006 | Colorado, US | 60 | Friday, July 14, 2006 | 46:35:54.00 |
| Hardrock 100 2005 | Colorado, US | 59 | Friday, July 8, 2005 | 46:38:00.00 |
| Hardrock 100 2004 | Colorado, US | 58 | Friday, July 9, 2004 | 44:48:10.00 |
| Hardrock 100 2003 | Colorado, US | 57 | Friday, July 11, 2003 | 47:36:22.00 |
| Hardrock 100 2001 | Colorado, US | 55 | Friday, July 13, 2001 | 42:13:12.00 |
| Hardrock 100 2000 | 54 | Friday, July 7, 2000 | 43:57:00.00 | |
| Hardrock 100 1998 | Colorado, US | 51 | Friday, July 10, 1998 | DNF |
| Hardrock 100 1997 | Colorado, US | 50 | Friday, July 11, 1997 | DNF |