The Dudinská Päťdesiatka or Dudinská 50 (Fifty kilometres of Dudince) is an annual racewalking competition held in March on the streets of Dudince, Slovakia. The primary focus of the competition is a men's 50 kilometres race walk, from which the event takes its name. There are also two 20 kilometres race walks, one for men and one for women, as well as a variety of shorter races for younger athletes.