Participants had to run bison. The dress in white,red scarf and red waistband In order to attract the eyes of these animals. In the morning there will be a release from bison to cattle in the city, running along the path some 850 meters and these brave men would have run with the bulls together riotously. In the afternoon, the racetrack to the city's bull Matador (Matador) fought with them and bison have been killed in fighting this field.