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TT 2025
Mountain Course
1970-1989
The only major change in this period was that Quarry Bends was partially straightened prior to the 1989 races.
Era
Now - 1990
1989 - 1970
1969 - 1950
1949 - 1920
TT Year
1989
1988
1987
1986
1985
1984
1983
1982
1981
1980
1979
1978
1977
1976
1975
1974
1973
1972
1971
1970
1973 Mountain Course Races
Production 750cc
Production 500cc
Production 250cc
Sidecar 750cc TT
Lightweight 250 TT
Sidecar 500cc TT
Junior TT
Lightweight 125cc TT
Formula 750cc TT
Senior TT
Other Courses
St John's
Mountain 1911-14
Clypse