It is the largest and most significant ultramarathon race in Hungary and one of the biggest in Central Europe.
Organised since 1990, this multiday race was run for its first fifteen years between Vienna and Budapest but was modified in 2006 to include Bratislava as well.
The shorter second day made completion easier but sped up the event and now favors faster ultra runners over those with more endurance.
On the fifth day, each relay member as well as individual athletes compete in a half marathon.
Due in part to the relatively high prize money, the race regularly attracts some of the region's biggest names, including former Comrades Marathon winner Maria Bak of Germany, former Badwater Ultramarathon winner Anatoli Kruglikov of Russia, former Spartathlon winner János Bogár and Polish greats Jaroslaw Janicki and Thomasz Chawawko as well as Brazil's former 100 kilometer world record holder Valmir Nunes.