| John DeWalt's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Hardrock 100 2009 | Pennsylvania, US | 73 | Friday, July 10, 2009 | 47:47:17.00 |
| Hardrock 100 2008 | Pennsylvania, US | 72 | Friday, July 11, 2008 | 47:54:58.00 |
| Hardrock 100 2007 | Pennsylvania, US | 71 | Friday, July 13, 2007 | 47:36:23.00 |
| Hardrock 100 2006 | Pennsylvania, US | 70 | Friday, July 14, 2006 | 47:49:52.00 |
| Hardrock 100 2005 | Pennsylvania, US | 69 | Friday, July 8, 2005 | 45:20:18.00 |
| Hardrock 100 2004 | Pennsylvania, US | 68 | Friday, July 9, 2004 | 45:06:33.00 |
| Hardrock 100 2003 | Pennsylvania, US | 67 | Friday, July 11, 2003 | 44:44:44.00 |
| Hardrock 100 2001 | Pennsylvania, US | 65 | Friday, July 13, 2001 | 39:52:35.00 |
| Hardrock 100 2000 | 64 | Friday, July 7, 2000 | 44:28:21.00 | |
| Hardrock 100 1999 | Pennsylvania, US | 63 | Friday, July 9, 1999 | 42:03:53.00 |
| Hardrock 100 1998 | Pennsylvania, US | 62 | Friday, July 10, 1998 | 46:32:36.00 |
| Hardrock 100 1997 | Pennsylvania, US | 61 | Friday, July 11, 1997 | 45:06:54.00 |
| Hardrock 100 1996 | Pennsylvania, US | 60 | Friday, July 12, 1996 | 46:58:23.00 |
| Hardrock 100 1994 | Pennsylvania, US | 58 | Friday, July 8, 1994 | 47:50:00.00 |