| Thomas Eftink's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Never Summer (2021) (60k) | Colorado, US | 25 | Friday, July 30, 2021 | 13:39:15.00 |
| Quad Rock 2021 (Quad Rock 25) | Colorado, US | 25 | Saturday, May 8, 2021 | 07:13:11.00 |
| Quad Rock (2019) (Quad Rock 50) | Colorado, US | 23 | Saturday, May 11, 2019 | DNF |
| Quad Rock (2018) (Quad Rock 50) | Colorado, US | 22 | Saturday, May 12, 2018 | DNF |