| Gretchen Foster's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| 2024 High Lonesome 100 | Colorado, US | 30 | Friday, July 19, 2024 | 32:44:59.00 |
| 2023 Sawatch Ascent 50k | Colorado, US | 29 | Sunday, September 24, 2023 | 07:33:02.00 |
| 2023 West Line Winder 50k | Colorado, US | 29 | Saturday, September 23, 2023 | 05:46:41.00 |
| 2023 Rattlesnake Ramble (Full Course) | CO | 29 | Saturday, September 16, 2023 | 00:39:59.00 |