The Running of the Bulls The "Encierro" or Running of the Bulls in the single most exciting event of the Fiesta of San Fermin. The race between the "mozos" which are young men, and the bulls throughout the narrow streets of the Pamplona old quarter is an explosion of sounds, images, and sensations which are unique for the spectator and impossible to forget for those who run. The "three minute death game" has been in Pamplona since the later part of the 14th century. Although the form might be a little bit different than what it used to be, the bulls have been "escorted" into the bull ring for at least 600 years. Just at the starting-line there is a small nitch built in