Derek Clayton is a retired Australian long-distance runner who was born in England and raised in Northern Ireland.

Clayton was the first marathon runner ever to break two hours & ten minutes when he set the world best marathon time at Fukuoka in December 1967. He further improved this in Antwerp in May 1969, setting a time that stood for almost 12 years as the world's best.

Clayton represented Australia twice at Olympic Games & won four Australian Marathon Championships. He was inducted into the Sport Australia Hall of Fame in 1999.

Track Championships	Road Championships	Off-Road Championships
1967-68 Australian 10000m	1967 Australian Marathon 1968 Australian Marathon 1971 Australian Marathon 1973 Australian Marathon
World Championships	Olympic Games	Commonwealth Games
	1968 Mexico City 1972 Munich	1970 Edinburgh 1974 Christchurch
World Records	Australian Records	State Records
World Marathon - 2h 09m 36.4s - 3 Dec 1967 World Marathon - 2h 08m 33.6s - 30 May 1969	Australian National Best Marathon - 2h 22m 12.0s - 2 Oct 1965# Australian Overseas Best Marathon - 2h 09m 36.4s - 3 Dec 1967# Australian National Best Marathon - 2h 14m 47.8s - 25 May 1968#

* Records set en-route to longer distance.
^ Overseas performances not recognised as records before 1969.
# Best on record for Non-Record Events.

Media

1992:	20 years on, two great runners meet again
1980:	He set a goal, went after it and set 2 world records that still stand
1979:	Derek Clayton's time has come
1972:	Australian athletes named for Munich Olympics	The race they hate to run