| Holly Gray's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Quad Rock 2023 (Quad Rock 25) | Colorado, US | 54 | Saturday, May 6, 2023 | 07:01:22.00 |
| Staunton Rocks! Marathon & Half 2022 (Half Marathon) | Colorado, US | 54 | Saturday, August 27, 2022 | 03:41:12.00 |
| Quad Rock 2020 (Quad Rock 25) | Colorado, US | 52 | Saturday, August 15, 2020 | 07:49:43.00 |
| Quad Rock (2018) (Quad Rock 25) | Colorado, US | 49 | Saturday, May 12, 2018 | 07:06:23.00 |