| Robert B. King's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Bighorn 100M 2014 | Texas, US | 53 | Friday, June 20, 2014 | DNF |
| Hardrock 100 2013 | Texas, US | 52 | Friday, July 12, 2013 | DNF |
| Hardrock 100 2012 | Texas, US | 51 | Friday, July 13, 2012 | DNF |
| Hardrock 100 2010 | Texas, US | 49 | Friday, July 9, 2010 | DNF |