The Cliff Young Australian 6 Day Race is an ultramarathon race that takes place in Colac, Victoria. One of a small handful of Six Day races around the world, the Cliff Young has had many fine performances culminating in November 2005 with Yiannis Kouros, arguably the best multiday runner in the world, setting a new world 6 Day record. It started in 1983 and was renamed in 2004 after Cliff Young, a Colac farmer and winner of the inaugural Sydney to Melbourne Westfield's Ultramarathon in May 1983.