The longest time to hop on one leg on a treadmill at a constant speed of 6.5 km/h (4.04 mph) is 4 minutes 2.6 seconds and was achieved by Will Elrick (Australia) on the set of Australia Smashes Guinness World Records at the Warringah Mall in Sydney, Australia, on 14 January 2010.

The record was part of the TV series “Australia Smashes Guinness World Records”