| Gene Griffiths's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| The Bear 100 2010 | Washington, US | 47 | Friday, September 24, 2010 | DNF |
| The Bear 100 2009 | Washington, US | 46 | Friday, September 25, 2009 | DNF |
| The Bear 100 2008 | Washington, US | 45 | Friday, September 26, 2008 | DNF |
| The Bear 100 2007 | 44 | Friday, September 28, 2007 | 30:47:00.00 | |
| The Bear 100 2006 | 42 | Friday, September 22, 2006 | 28:50:24.00 | |
| The Bear 100 2005 | 41 | Friday, September 23, 2005 | 30:17:45.00 | |
| The Bear 100 2004 | 41 | Friday, September 24, 2004 | 28:57:18.00 | |
| The Bear 100 2003 | 39 | Friday, September 26, 2003 | 28:26:16.00 |