Doctor Ignacio Iribarren, spokesman for Pamplona's Navarra hospital, said only four runners had been admitted for treatment—two with head concussions, and two with arm and leg injuries.
The run, which featured large bulls of the Torrehandilla ranch, took just two minutes and 33 seconds to cover the 849-meter (928-yard) course from the holding stables just outside the city walls to a central bullring. On average, the run takes just over three minutes.
The festival in this northern city dates back to the late 16th century.