| Kirk Cox's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Never Summer 100k (2018) | Colorado, US | 31 | Saturday, July 28, 2018 | 22:51:25.00 |
| 2018 Golden Gate Dirty 30 (50K) | 31 | Saturday, June 2, 2018 | 08:50:09.00 |
| Kirk Cox's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Never Summer 100k (2018) | Colorado, US | 31 | Saturday, July 28, 2018 | 22:51:25.00 |
| 2018 Golden Gate Dirty 30 (50K) | 31 | Saturday, June 2, 2018 | 08:50:09.00 |