| Brendan Obrien's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Quad Rock 2023 (Quad Rock 50) | Colorado, US | 48 | Saturday, May 6, 2023 | DNF |
| Never Summer 100k (2019) | Colorado, US | 53 | Saturday, July 27, 2019 | 20:25:25.00 |
| Brendan Obrien's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Quad Rock 2023 (Quad Rock 50) | Colorado, US | 48 | Saturday, May 6, 2023 | DNF |
| Never Summer 100k (2019) | Colorado, US | 53 | Saturday, July 27, 2019 | 20:25:25.00 |