In multi-sports disciplines such as triathlon 180 km cycling and 42.2 km running with the fastest winner times of ~ 8 hours has to be considered as an ultra-endurance performance ( Lepers 2008 ) .
Triathlon is an Ironman triathlon covering 3.8 km swimming .
In multi-sports disciplines such as triathlon , an Ironman triathlon covering 3.8 km swimming , 180 km cycling and 42.2 km running with the fastest winner times of ~ 8 hours has to be considered as an ultra-endurance performance ( Lepers 2008 ) .