| Zachary Marks's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Staunton Rocks! Marathon & Half (Half Marathon) | Colorado, US | 33 | Saturday, August 28, 2021 | 02:34:35.00 |
| Never Summer (2021) (100k) | Colorado, US | 33 | Saturday, July 31, 2021 | 18:20:32.00 |
| Zachary Marks's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Staunton Rocks! Marathon & Half (Half Marathon) | Colorado, US | 33 | Saturday, August 28, 2021 | 02:34:35.00 |
| Never Summer (2021) (100k) | Colorado, US | 33 | Saturday, July 31, 2021 | 18:20:32.00 |