Running of the bulls into the turn at Estafeta ("la curva"), resulting in the installation of anti-slip surfacing, and now most of the bulls negotiate the turn onto Estafeta and are often ahead of the steers. This has resulted in a quicker run. Runners are not permitted in the first 50 meters of the encierro, which is an uphill grade where the bulls are much faster. Every year, between 50 and 100 people are injured during the run. Not all of the injuries require taking the patients to the hospital: in 2013, 50 people were taken by ambulance to Pamplona's hospital, with this number
San Fermín to have met his end by being dragged through the streets with angry bulls running after him, hence the tradition. The celebration of the festival has its origin in the combination of two different medieval events. Commercial secular fairs were held at the beginning of the summer. As cattle merchants came into town with their animals, eventually bullfighting came to be organized as a part of the tradition. Specifically, they were first documented in the 14th century. On the other hand, religious ceremonies honoring the saint were held on October 10. However, in 1591 they were transferred to July 7