| Jean-Francois Geiss's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Hardrock 100 2022 | FRA, France | 69 | Friday, July 15, 2022 | DNF |
| Hardrock 100 2018 | FRA, France | 65 | Friday, July 20, 2018 | 45:32:16.00 |
| Hardrock 100 2016 | France | 63 | Friday, July 15, 2016 | 44:08:42.00 |
| Hardrock 100 2015 | France | 62 | Friday, July 10, 2015 | DNF |
| Hardrock 100 2014 | France | 61 | Friday, July 11, 2014 | 45:30:18.00 |
| Hardrock 100 2013 | France | 60 | Friday, July 12, 2013 | 40:51:29.00 |
| Hardrock 100 2011 | 58 | Friday, July 15, 2011 | DNF | |
| Hardrock 100 2009 | France | 56 | Friday, July 10, 2009 | 44:54:22.00 |
| Hardrock 100 2008 | 55 | Friday, July 11, 2008 | 45:18:58.00 | |
| Hardrock 100 2007 | France | 54 | Friday, July 13, 2007 | 43:02:04.00 |
| Hardrock 100 2005 | France | 52 | Friday, July 8, 2005 | 47:19:36.00 |