| Jan Gnass's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| 2017 Silverton Double Dirty 30 (100K) | California, US | 67 | Saturday, September 23, 2017 | DNF |
| Hardrock 100 2006 | Oregon, US | 57 | Friday, July 14, 2006 | DNF |
| Hardrock 100 2003 | California, US | 54 | Friday, July 11, 2003 | 45:20:20.00 |
| Hardrock 100 2001 | California, US | 52 | Friday, July 13, 2001 | DNF |
| Hardrock 100 1999 | California, US | 49 | Friday, July 9, 1999 | 45:12:25.00 |
| Hardrock 100 1998 | California, US | 48 | Friday, July 10, 1998 | DNF |