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 nearly doubling that of 2012
Goring is much less common but potentially life threatening. In 2013 for example, 6 participants were gored along the festival, in 2012 only 4 runners were injured by the horns of the bulls with exactly the same number of gored people in 2011, 9 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. Previously to that date running was prohibited for women.
Another major risk is runners falling and piling up (a "montón") at the entrance of the bullring , which acts as a funnel as it is much narrower than the previous street. In such cases injuries come both from asphyxia and contusions to those in the pile and from goring if the bulls crush into the pile. This kind of blocking of the entrance has occurred at least ten times in the history