| Year | Class 4A | Time | Class 3A | Time |
|---|---|---|---|---|
| 2025 | Laramie | 4:17.56 | Cody | 4:29.47 |
| 2024 | Laramie | 4:19.69 | Cody | 4:15.50 |
| 2023 | Cheyenne Central | 4:14.11 | Cody | 4:21.11 |
| 2022 | Cheyenne Central | 4:19.53 | ||
| 2021 | Rawlins | 4:19.42 | ||
| 2020 | Cody | 4:16.66 | ||
| 2019 | Sheridan | 4:18.51 | ||
| 2018 | Sheridan | 4:18.83 | ||
| 2017 | Not contested | |||
| 2016 | Not contested | |||
| 2015 | Not contested | |||
| 2014 | Not contested | |||
| 2013 | Not contested | |||
| 2012 | Not contested | |||
| 2011 | Not contested | |||
| 2010 | Not contested | |||
| 2009 | Not contested | |||
| 2008 | Not contested | |||
| 2007 | Not contested | |||
| 2006 | Not contested |