Participants run ahead of bulls during the “encierro” (bull run) of the San Fermin festival in Pamplona, northern Spain.

On each day of the festival, six bulls are released at 8:00 a.m. to run from their corral through the narrow, cobbled streets of the old town over an 850-metre course.

Ahead of them are runners who try to stay close to the bulls without falling over or being gored.​