Participants run or walk either 10 kilometres or a full marathonnaked.[1] Participants tend to wear only shoes, socks and headwear.[1] Women wear a top if their breasts are shaking too much. It has been held annually since 2003. It usually draws about 100 to 150 participants,[1] of which one-tenth to one-fifth are women. Even though the event isn't organised by naturists and not only for naturists, half of the participants are naturists.
The event is organized by Aarne Heino together with local village community.[1]
