Participants attempt to evade a Cebada Gago fighting bull on the second day of the San Fermin bull run in Pamplona, northern Spain.
On each day of the festival six bulls are released at 8:00 a.m. (0600 GMT) to run from their corral through the narrow, cobbled streets of the old town over an 850-meter (yard) course.
Ahead of them are the runners, who try to stay close to the bulls without falling over or being gored.
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