| Cecelia Williams's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| 2025 High Lonesome 100 | Colorado, US | 29 | Friday, July 18, 2025 | 23:36:05.00 |
| Never Summer 100k (2024) (100k) | Colorado, US | 28 | Saturday, July 27, 2024 | 15:29:47.00 |
| Cecelia Williams's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| 2025 High Lonesome 100 | Colorado, US | 29 | Friday, July 18, 2025 | 23:36:05.00 |
| Never Summer 100k (2024) (100k) | Colorado, US | 28 | Saturday, July 27, 2024 | 15:29:47.00 |