Roy Cromack (b. Doncaster, England, 18 February 1940) was a racing cyclist who represented Britain in track races and in international road races such as the Peace Race. He was the first British cyclist to ride more than 500 miles in a 24-hour time trial.
Cromack rode 507 miles in the Road Time Trials Council national 24-hour championship in July 1969. It was his first ride at the distance and the first time the record had been broken. The record stood for 28 years. He beat the second rider, Eric Matthews, by 15 miles.[1]
Cromack was a rare all-rounder, winning championship medals from 4,000 metres on the track to 24 hours on the road. He won medals at every distance offered in British time-trialling championships and rode the road race for Britain at the Olympic Games in Mexico.
He has an entry in the Golden Book of Cycling.