| Curtis Singer's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Staunton Rocks! Marathon & Half 2025 (Half Marathon) | Colorado, US | 36 | Saturday, August 23, 2025 | 03:32:26.00 |
| Red Feather Trail Jamboree 2022 (Half Marathon) | Colorado, US | 33 | Saturday, September 17, 2022 | 02:58:50.00 |
| 2021 Golden Gate Dirty 30 (50K) | Colorado, US | 31 | Saturday, June 12, 2021 | 11:38:16.00 |