K24 Klasika (Slovenia)
A Slovenian, or more specifically Koroska version of Bob Graham Round or the 3 Peaks challenge. A challenge that started back in 2000 as an idea among a couple of friends (Milan Savellij, Dušan Štrucl in Marjan Lačen) who pondered whether it would be possible to walk/trek/run across the peaks of Koroska region in under 24 hours, without support (apart from food and water).