| Year | Class 4A/AA | Time | Class 3A/A | Time | Class 2A/B | Time | Class 1A/C | Time |
|---|
Year | Class 4A/AA | Time | Class 3A/A | Time | Class 2A/B | Time | Class 1A/C | Time |
|---|---|---|---|---|---|---|---|---|
| 1979 | Cheyenne Central | 1:47.90 | not contested at A level | not contested at B level | Encampment | 1:56.70 | ||
| 1978 | Worland | 1:49.15 | Jackson | 1:47.80 | Basin | 1:53.10 | Glendo | 2:02.74 |
| 1977 | Lander | 1:51.00 | Buffalo | 1:51.77 | Pine Bluffs | 1:54.25 | Meeteetse | 1:59.30 |
| 1976 | Lander | 1:49.85 | Thermopolis | 1:53.80 | Pine Bluffs | 1:55.20 | Snake River | 1:55.98 |
| 1975 | Natrona County | 1:48.60 | Torrington | 1:50.39 | Pine Bluffs | 1:55.19 | Ten Sleep | 1:56.70 |
| 1974 | Lander | 1:54.20 | Greybull | 1:56.20 | ||||
| 1973 | Kelly Walsh | 1:53.80 | Deaver-Frannie | 1:57.80 | ||||
| 1972 | Kelly Walsh | 1:57.10 | Meeteetse/Sundance | 1:58.30 | ||||
| 1971 | Kelly Walsh | 1:56.40 | Sundance | 1:58.90 | ||||
| 1970 | Kelly Walsh | 1:51.60 |
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