A Powerman Duathlon is a variation of a duathlon that is of a noticeably longer distance. The common distance is 10 km running, then 60 km biking finishing with 10 km running. However there are also Powerman with slightly other distances.
One of the more well-known duathlons in the world is Powerman Zofingen, in Switzerland. It consists of 10 km running, 150 km cycling and 30 km running.
-  Powerman World Series 2009