Derek Clayton (athletics) twice competed in the marathon at the Commonwealth Games, in the editions of 1970 in Edinburgh and 1974 in Christchurch. Clayton set a world best time in the marathon in Fukuoka, Japan, in 1967 with a time of 2:09.36, the first time any athlete had broke two hours and ten minutes. Then bettered his time in Antwerp in 1969, running 2:08.33, a record time which stood for more than 12 years, Clayton entered Edinburgh as a favourite. But despite his successes on the roads, the Commonwealth Games were not a happy hunting ground for the Victorian, as he recorded a ‘did not finish’ on both occasions. Clayton finished 7th in the 1968 Mexico Olympic marathon and 13th in 1972 in Munich. Clayton was inducted into the Sport Australia Hall of Fame in 1999.