| Marisa Watson's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| 2024 Running Up For Air (SLC) (24H) | Colorado, US | 37 | Saturday, February 3, 2024 | 22:27:20.00 |
| 2023 High Lonesome 100 | Colorado, US | 36 | Friday, July 21, 2023 | 25:09:52.00 |
| 2022 Sawatch Ascent 50k | Colorado, US | 36 | Sunday, September 25, 2022 | 07:32:25.00 |
| 2022 West Line Winder 50k | Colorado, US | 36 | Saturday, September 24, 2022 | 05:10:20.00 |
| Blue Sky Marathon 2019 (Blue Sky) | Colorado, US | 33 | Saturday, October 19, 2019 | 04:24:19.00 |