Longmont, CO
| Rank | Year | Name | Category | Time |
|---|---|---|---|---|
| 1 | 2020 | Jason Romero | M 50-59 | 20:37:51 |
| 2 | 2023 | Allen Plack | M 40-49 | 22:50:48 |
| 3 | 2019 | David Lewis | M 30-39 | 23:17:53 |
| 4 | 2021 | Jason Romero | M 50-59 | 23:30:35 |
| 5 | 2019 | Matthew Sandy | M 30-39 | 23:40:31 |
| 6 | 2022 | Jason Romero | M 50-59 | 24:37:33 |
| 7 | 2020 | Keith Holley | M 40-49 | 25:40:27 |
| 8 | 2023 | Christopher Rahill | M 40-49 | 26:58:27 |
| 9 | 2021 | Mateo Otero | M 30-39 | 27:06:01 |
| 10 | 2023 | Veronique Carney | F 50-59 | 27:50:19 |
| 11 | 2023 | T Harms-Synkiew | M 20-29 | 28:27:59 |
| 12 | 2022 | Lucas Durig | M 40-49 | 28:35:20 |
| 13 | 2019 | Robert Tremayne | M 40-49 | 28:44:20 |
| 14 | 2019 | Deb Robinson | F 60-69 | 29:03:44 |
| 15 | 2019 | Kris Bhatti | F 50-59 | 29:33:52 |
