| Year | Class 4A/AA | Time | Class 3A/A | Time | |
|---|---|---|---|---|---|
| 2023 | Jackson | 1:50.01 | Green River | 1:52.32 | |
| 2022 | Cheyenne Central | 1:52.30 | Lander | 1:53.98 | |
| 2021 | Campbell County | 1:47.94 | Green River | 1:53.13 | |
| 2020 | Campbell County | 1:49.89 | Green River | 1:50.24 | |
| 2019 | Laramie | 1:45.93 | Lyman | 1:53.36 | |
| 2018 | Sheridan | 1:47.89 | Lander | 1:51.96 | |
| 2017 | Sheridan | 1:48.27 | Lander | 1:53.60 | |
| 2016 | Sheridan | 1:49.56 | Riverton | 1:56.11 | |
| 2015 | Campbell County | 1:51.66 | Jackson | 1:53.57 | |
| 2014 | Campbell County | 1:51.71 | Jackson | 1:54.47 | |
| 2013 | Sheridan | 1:51.36 | Jackson | 1:52.59 | |
| 2012 | Cheyenne East | 1:50.11 | Jackson | 1:54.05 | |
| 2011 | Campbell County | 1:49.61 | Jackson | 1:55.92 | |
| 2010 | Campbell County | 1:45.53 | Jackson | 1:53.80 | |
| 2009 | Campbell County | 1:51.70 | Jackson | 1:56.08 | |
| 2008 | Campbell County | 1:47.97 | Jackson | 1:57.95 | |
| 2007 | Campbell County | 1:51.95 | Lander | 1:59.40 | |
| 2006 | Cheyenne East | 1:51.31 | Lander | 1:57.91 | |
| 2005 | Cheyenne Central | 1:54.21 | Buffalo | 1:57.85 | |
| 2004 | Kelly Walsh | 1:53.96 | Lander | 1:56.57 | |
| 2003 | Kelly Walsh | 1:53.34 | Newcastle | 1:54.27 | |
| 2002 | Kelly Walsh | 1:52.97 | Newcastle | 1:57.01 | |
| 2001 | Campbell County | 1:52.18 | Rawlins | 1:56.74 | |
| 2000 | Campbell County | 1:51.92 | Rawlins | 1:57.00 | |
| 1999 | Campbell County | 1:48.91 | Newcastle | 1:57.35 | |
| 1998 | Campbell County | 1:49.13 | Newcastle | 1:59.04 | |
| 1997 | Campbell County | 1:51.13 | Powell | 1:57.92 | |
| 1996 | Campbell County | 1:49.97 | Rawlins | 1:59.95 | |
| 1995 | Campbell County | 1:49.58 | Powell | 1:58.25 | |
| 1994 | Campbell County | 1:49.27 | Powell | 1:59.10 | |
| 1993 | Laramie | 1:53.90 | Lander | 1:58.00 | |
| 1992 | Campbell County | 1:55.38 | Douglas | 1:59.57 | |
| 1991 | Rock Springs | 1:59.47 | Kemmerer | 2:00.32 | |
| 1990 | Campbell County | 1:58.97 | Newcastle | 1:59.33 | |
| 1989 | Campbell County | 1:59.01 | Newcastle | 1:59.62 | |
| 1988 | Laramie | 1:58.26 | Newcastle | 2:02.27 | |
| 1987 | Cheyenne Central | 1:57.00 | Newcastle | 2:05.67 | |
| 1986 | Cheyenne Central | 1:54.86 | Buffalo | 2:08.14 | |
| 1985 | Cheyenne Central | 1:54.16 | Greybull | 2:04.87 | |
| 1984 | Laramie | 1:56.25 | Evanston | 2:03.47 | |
| 1983 | Laramie | 1:56.88 | Douglas | 2:06.39 | |
| 1982 | Laramie | 1:56.57 | Douglas | 2:09.74 | |
| 1981 | Laramie | 2:12.83 | Douglas | 2:26.27 | **races in meters |
| 1980 | Campbell County | 2:02.56 | Big Piney | 2:11.70 | |
| 1979 | Rock Springs | 2:00.70 | Douglas | 2:11.83 | |
| 1978 | Rock Springs | 2:01.18 | Douglas | 2:13.26 | |
| 1977 (held winter 1978) | Cheyenne East | 2:00.27 | Glenrock | 2:30.14 | **Class A races in meters |
| 1976 (held winter 1977) | Sheridan | 2:16.59 | Green River | 2:26.40 | **races in meters |
| 1975 (held spring 1976) | Laramie | 2:02.70 | Green River | 2:20.41 | |
| 1974 (held spring 1975) | Laramie | 2:03.5 | Big Piney | 2:18.6 | |
| 1973 (held spring 1974) | Laramie | 2:09.3 | Glenrock | 2:24.7 | |
| 1972 (fall) | Laramie | 2:11.6 | - | - | |
| 1971 (spring) | Laramie | 2:06.4 | - | - | |
| 1970 (spring) | Sheridan | 2:13.4 | - | - |