GMC Rangeland Derby Champions
| 1923 Bill Summers | 1966 Bill Greenwood |
| 1924 Tom Lauder | 1967 Bob Cosgrave |
| 1925 Jim Ross | 1968 Gary Dorchester |
| 1926 Dick Cosgrave | 1969 Bob Cosgrave |
| 1927 Tom Lauder | 1970 Tom Dorchester |
| 1928 Tom Lauder | 1971 Tom Dorchester |
| 1929 Jim Ross | 1972 Ralph Vigen |
| 1930 Dick Cosgrave | 1973 Slim Helmle |
| 1931 Clem Gardner | 1974 Kelly Sutherland |
| 1932 Jim Ross | 1975 Kelly Sutherland |
| 1933 Dick Cosgrave | 1976 Ralph Vigen |
| 1934 Eben Bremner | 1977 Kelly Sutherland |
| 1935 Dick Cosgrave | 1978 Kelly Sutherland |
| 1936 Dick Cosgrave | 1979 Buddy Bensmiller |
| 1937 Dick Cosgrave | 1980 Herman Flad |
| 1938 Dick Cosgrave | 1981 Bruce Craige |
| 1939 Sam Johnson | 1982 Dave Lewis |
| 1940 Dick Cosgrave | 1983 Tom Glass |
| 1941 Ron Glass | 1984 Dallas Dorchester |
| 1942 Dick Cosgrave | 1985 Ralph Vigen |
| 1943 Dick Cosgrave | 1986 Kelly Sutherland |
| 1944 Theo Thage | 1987 Tom Glass |
| 1945 Alvan Hilker | 1988 Dave Lewis |
| 1946 Ron Glass | 1989 Buddy Bensmiller |
| 1947 Ron Glass | 1990 Dave Lewis |
| 1948 John Swain | 1991 Dallas Dorchester |
| 1949 Ron Glass | 1992 Tom Glass |
| 1950 Bob Heberling | 1993 Jerry Bremner |
| 1951 Hank Willard | 1994 Tom Glass |
| 1952 Hank Willard | 1995 Ward Willard |
| 1953 Hank Willard | 1996 Edgar Baptiste |
| 1954 Hank Willard | 1997 Kelly Sutherland |
| 1955 Hank Willard | 1998 Kelly Sutherland |
| 1956 Lloyd Nelson | 1999 Kelly Sutherland |
| 1957 Dale Flett | 2000 Hugh Sinclair |
| 1958 Bill Greenwood | 2001 Kelly Sutherland |
| 1959 Dale Flett/Hally Walgenbach | 2002 Kelly Sutherland |
| 1960 Hally Walgenbach | 2003 Buddy Bensmiller |
| 1961 Dale Flett/Hally Walgenbach | 2004 Hugh Sinclair |
| 1962 Dale Flett | 2005 Luke Tournier |
| 1963 Dale Flett | 2006 Hugh Sinclair |
| 1964 Hally Walgenbach | 2007 Luke Tournier |
| 1965 Bill Greenwood |
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