The Norseman Xtreme Triathlon is a non-Ironman branded triathlon, point to point, race held in Norway annually. The distances are equivalent to those of an Ironman race with the swim starting from the loading bay of a car ferry, through the water of the Hardanger fjord to the local town, Eidfjord. At Eidfjord the competitors transition onto their bikes and then cycle 180 km through the mountains, the first 40 km of which is uphill. After transition two, the competitors then run 42.2 km of which the first 25 km are flat and following this they end up climbing the local mountain, Gaustatoppen, 1,880 m above sea level.

An Ironman Triathlon is one of a series of long-distance triathlon races organized by the World Triathlon Corporation (WTC), consisting of a 2.4-mile (3.9 km) swim, a 112-mile (180.2 km) bicycle ride and a marathon 26.22-mile (42.2 km) run completed in that order, a total of 140.6 miles (226.3 km). It is widely considered one of the most difficult one-day sporting events in the world.