| Marianna Grudziak's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Wawayanda Trail Fest 2023 (Half Marathon) | Pennsylvania, US | 37 | Saturday, October 21, 2023 | 02:21:17.00 |
| 2023 Twisted Branch Trail Run (2023 Twisted Branch Trail Run) | Pennsylvania, US | 37 | Saturday, August 19, 2023 | DNF |
| Laurel Highlands Ultra 2023 (70.5) | Pennsylvania, US | 36 | Saturday, June 10, 2023 | 15:12:49.00 |
| Laurel Highlands Ultra 2022 (70.5) | Pennsylvania, US | 35 | Saturday, June 11, 2022 | In progress |
| 2021 Laurel Highlands (LHU 70.5) | West Virginia, US | 34 | Saturday, June 12, 2021 | 15:22:48.00 |