For three years: 1986, 1994, and 1995, it was run in two divisions.

The race was run in two divisions in 1961 and 1963.

The race was run in two divisions in 1953, 1983, 1986 and 1993.

The race was run in two divisions from 1979-1989, 1993, 1995-1996.

In 1965 and 1971, the race was run in two divisions.

This included a division of the 1943 race, which was run in two divisions.

The competition has been run in two separate divisions since 1992.

The race was run in two divisions in1982, 1984 and 1985.

For 1967 only, the race was run in two divisions.

It was run in two divisions on three occasions: 1941, 1967, 1968.