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
Running of the bulls nearly doubling that of 2012. Goring is much less common but potentially life threatening. In 2013, for example, six participants were gored along the festival, in 2012, only four runners were injured by the horns of the bulls with exactly the same number of gored people in 2011, nine in 2010 and 10 in 2009; with one of the latter killed. As most of the runners are male, only 5 women have been gored since 1974. Before that date, running was prohibited for women. Another major risk is runners falling and piling up (a "montón") at the entrance of the