| Randy Isler's efforts: | From | Finish Time |
|---|---|---|
| Hardrock 100 2016 | New Mexico, US | DNF |
| Hardrock 100 2015 | New Mexico, US | DNF |
| Hardrock 100 2014 | New Mexico, US | 41:35:03 |
| Hardrock 100 2013 | New Mexico, US | 41:23:34 |
| Hardrock 100 2012 | New Mexico, US | 43:01:00 |
| Hardrock 100 2011 | New Mexico, US | 38:57:00 |
| Hardrock 100 2010 | New Mexico, US | 40:44:35 |
| Hardrock 100 2009 | New Mexico, US | 39:55:07 |
| Hardrock 100 2008 | New Mexico, US | 44:30:44 |
| Hardrock 100 2007 | New Mexico, US | 37:27:26 |
| Hardrock 100 2006 | New Mexico, US | 37:37:07 |
| Hardrock 100 2005 | New Mexico, US | 41:23:56 |
| Hardrock 100 2004 | New Mexico, US | 38:56:43 |
| Hardrock 100 2003 | New Mexico, US | 39:28:31 |
| Hardrock 100 2001 | New Mexico, US | 35:51:21 |
| Hardrock 100 2000 | 34:01:24 | |
| Hardrock 100 1999 | New Mexico, US | 31:05:04 |
| Hardrock 100 1998 | New Mexico, US | 31:14:50 |
| Hardrock 100 1997 | New Mexico, US | 32:17:05 |
| Hardrock 100 1996 | New Mexico, US | 32:36:36 |