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| Year | Class 4A/AA | Time | Class 3A/A | Time | |
| 2025 | Kelly Walsh | 1:29.68 | Lander | 1:27.49 | |
| 2024 | Laramie | 1:30.35 | Buffalo | 1:29.23 | |
| 2023 | Laramie | 1:29.62 | Buffalo | 1:28.50 | |
| 2022 | Laramie | 1:29.64 | Buffalo | 1:28.79 | |
| 2021 | Kelly Walsh | 1:27.70 | Lander | 1:24.59 | |
| 2020 | Kelly Walsh | 1:28.73 | Powell | 1:33.41 | |
| 2019 | Laramie | 1:27.77 | Rawlins | 1:33.83 | |
| 2018 | Laramie | 1:25.98 | Lander | 1:31.33 | |
| 2017 | Campbell County | 1:27.65 | Lander | 1:30.88 | |
| 2016 | Campbell County | 1:28.32 | Lander | 1:28.71 | |
| 2015 | Laramie | 1:30.04 | Lander | 1:31.61 | |
| 2014 | Kelly Walsh | 1:25.95 | Kemmerer | 1:31.69 | |
| 2013 | Campbell County | 1:27.11 | Lander | 1:33.03 | |
| 2012 | Campbell County | 1:28.56 | Worland | 1:33.06 | |
| 2011 | Campbell County | 1:28.43 | Buffalo | 1:33.54 | |
| 2010 | Cheyenne Central | 1:30.61 | Buffalo | 1:32.25 | |
| 2009 | Kelly Walsh | 1:28.97 | Lander | 1:32.56 | |
| 2008 | Campbell County | 1:30.19 | Buffalo | 1:33.08 | |
| 2007 | Campbell County | 1:28.07 | Sublette | 1:32.25 | |
| 2006 | Campbell County | 1:31.06 | Lander | 1:33.88 | |
| 2005 | Laramie | 1:29.11 | Kemmerer | 1:34.38 | |
| 2004 | Green River | 1:28.91 | Lander | 1:34.87 | |
| 2003 | Green River | 1:29.45 | Lander | 1:33.36 | |
| 2002 | Green River | 1:28.93 | Lander | 1:33.96 | |
| 2001 | Green River | 1:32.66 | Newcastle | 1:32.79 | |
| 2000 | Campbell County | 1:29.62 | Lander | 1:30.31 | |
| 1999 | Campbell County | 1:29.44 | Lander | 1:31.17 | |
| 1998 | Campbell County | 1:30.09 | Worland | 1:30.44 | |
| 1997 | Green River | 1:26.89 | Worland | 1:30.59 | |
| 1996 | Campbell County | 1:26.96 | Rawlins | 1:28.07 | |
| 1995 | Green River | 1:29.46 | Lander | 1:33.75 | |
| 1994 | Laramie | 1:29.70 | Lander | 1:34.29 | |
| 1993 | Laramie | 1:28.91 | Worland | 1:32.84 | |
| 1992 | Campbell County | 1:28.62 | Worland | 1:34.15 | |
| 1991 | Campbell County | 1:28.70 | Rawlins | 1:32.49 | |
| 1966-90 | Not competed | | Not competed | | |
| 1965 | Powell | 1:40.1 | | | |
| 1964 | Powell | 1:41.3 | | | |
| 1963 | Powell | 1:39.9 | | | |
| 1962 | Cheyenne Central | 1:43.2 | | | |
| 1961 | Powell | 2:55.1 | | | |
| 1960 | Rock Springs | 1:43.5 | | | |
| 1959 | Powell | 1:59.1 | | | **relay races in meters |
| 1958 | Powell | 2:04.3 | | | **relay races in meters |
| 1957 | Cheyenne Central | 1:46.2 | | | |
| 1956 | Natrona | 1:47.5 | | | |
| 1955 | Natrona | 1:50.7 | | | |
| 1954 | Cheyenne Central | 1:54.2 | | | |
| 1953 | Meet canceled | | | | |
| 1952 | Natrona | 1:54.0 | | | |
| before 1952 | Not competed | | | | |