| Marci Backus's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Twisted Branch Trail Run 2017 | Colorado, US | 36 | Saturday, August 19, 2017 | 18:33:27.00 |
| Never Summer 100k 2015 | CO | 34 | Saturday, July 25, 2015 | 23:36:54.00 |
| The Bear 100 2010 | Colorado, US | 29 | Friday, September 24, 2010 | 34:37:00.00 |