Marc Kiernan has 7 recorded races from Aspen, Colorado, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2026-07-24 | 2026 Life Time Leadville Stage Race 2 Day Totals | Ultra Marathon | 10:02:13 | 239 |
| 2026-07-24 | 2026 Life Time Leadville Stage Race Day 3 - 40 Miles | Ultra Marathon | 5:34:34 | 225 |
| 2023-07-28 | 2023 Stages Cycling Leadville Stage Race Stage Race Solo - 3 Day Totals | Ultra Marathon | 12:13:25 | 271 |
| 2023-07-28 | 2023 Stages Cycling Leadville Stage Race Day 1 - 40 Miles | Ultra Marathon | 4:12:22 | 289 |
| 2023-07-28 | 2023 Stages Cycling Leadville Stage Race Day 2 - 20 Miles | 3:23:01 | 272 | |
| 2023-07-28 | 2023 Stages Cycling Leadville Stage Race Day 3 - 40 Miles | Ultra Marathon | 4:38:02 | 267 |
| 2023-07-28 | 2023 Stages Cycling Leadville Stage Race Days 1 and 2 Totals | Ultra Marathon | 7:35:23 | 272 |