100m sprint has been one of original track events in the Summer Paralympics since 1968. The first track events were for male wheelchair competitors only (female wheelchair competitors took part in 60m sprints in that year, they took part in the 100m sprint in 1976). Able-bodied athletes took part in track events in 1976. Throughout the years, classes have been renamed as well as being added. In 1964, there were three classes in the track events (A, B and C), they later changed to numbers (1A/B, 2, 3, 4, 5)