"This is no flat, dawdle around some obstacle course on the edge of suburbia.
"The rugged hill country makes for plenty of lung burning and calf-aching even before you throw in the obstacles,'' Stewart said.
The course was designed to maximise the natural assets of the working sheep and beef farm, he said.
"Many of the obstacles are based on natural springs that have guaranteed mud all year round. There is a dam with a floating island to crawl over, a 100-year-old tree with roots straight out of a Hobbit scene and plenty of dams, bogs and hills.''