The mid-winter calendar position means the rally is frequently snow-bound with the surface a mix of ice and asphalt.
Achim Warmbold became the first multiple winner of the event in 1973, but Franz Wittmann, Sr. came to dominate the rally.
He won the rally nine times in a ten-year period from 1975 to 1984, including six straight wins in Audis as the 4WD era dawned.
In recent times honours have been shared between Austrian and Czech drivers, reflecting the dual national championship status the rally has acquired.
Raimund Baumschlager, Václav Pech, Jr. and Jan Kopecký have claimed multiple victories.