A bull horns a runner in Pamplona, Spain, on the last day of the San Fermin festival's annual running of the bulls Monday, July 14. The bull run, a 400-year tradition, takes place over eight days.
Pamplona's running of the bulls —
A bull horns a runner in Pamplona, Spain, on the last day of the San Fermin festival's annual running of the bulls Monday, July 14. The bull run, a 400-year tradition, takes place over eight days.
Pablo Blazquez Dominguez/Getty Images
The bull run is 850 meters, or half a mile.
Pamplona's running of the bulls —
The bull run is 850 meters, or half a mile.
Andres Kudacki/AP
A man tries to protect himself July 14 in the bull ring where each bull run ends.
Pamplona's running of the bulls —
A man tries to protect himself July 14 in the bull ring where each bull run ends.
Alvaro Barrientos/ap
A fallen runner covers his head as a bull passes over him on July 14.
Pamplona's running of the bulls —
A fallen runner covers his head as a bull passes over him on July 14.
Daniel Ochoa de Olza/AP
Bullfighter Diego Urdiales adjusts his capote before doing the "paseillo," or ritual entrance to the arena, before a bullfight on Sunday, July 13.
Pamplona's running of the bulls —
Bullfighter Diego Urdiales adjusts his capote before doing the "paseillo," or ritual entrance to the arena, before a bullfight on Sunday, July 13.
Daniel Ochoa de Olza/AP
Bullfighter Manuel Escribano performs on July 13.
Pamplona's running of the bulls —
Bullfighter Manuel Escribano performs on July 13.
Daniel Ochoa de Olza/AP
A young bull tries to jump over an obstacle during an exhibition of riding and acrobatic skills on July 13.
Pamplona's running of the bulls —
A young bull tries to jump over an obstacle during an exhibition of riding and acrobatic skills on July 13.
JESUS DIGES/EPA/LANDOV
A reveler sleeps on a public bench on July 13.
Pamplona's running of the bulls —
A reveler sleeps on a public bench on July 13.
Daniel Ochoa de Olza/AP
Revelers and bulls run as they enter the bullring on July 13.
Pamplona's running of the bulls —
Revelers and bulls run as they enter the bullring on July 13.
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Runners pass a wall painted with an image of San Fermin, the saint the festival is named for, on July 13.
Pamplona's running of the bulls —
Runners pass a wall painted with an image of San Fermin, the saint the festival is named for, on July 13.
Alvaro Barrientos/ap
Revelers lie on the ground as a bull runs by July 13.
Pamplona's running of the bulls —
Revelers lie on the ground as a bull runs by July 13.
daniel Ochoa de Olza/ap
Juan Jose Padilla fights a bull on Saturday, July 12.
Pamplona's running of the bulls —
Juan Jose Padilla fights a bull on Saturday, July 12.
JESUS DIGES/EPA/LANDOV
People watch as revelers and bulls fill a street on July 12.
Pamplona's running of the bulls —
People watch as revelers and bulls fill a street on July 12.
Andres Kudacki/AP
Runners and bulls are seen on July 12.
Pamplona's running of the bulls —
Runners and bulls are seen on July 12.
Andres Kudacki/AP
Two women sit on the street during the San Fermin festival on July 12.
Pamplona's running of the bulls —
Two women sit on the street during the San Fermin festival on July 12.
Alvaro Barriento/AP
A ''recortador'' jumps over a bull during a competition at the festival on July 12. Recortadors leap over the bulls in a bloodless version of bullfighting where the one getting the closest and showing the least fear wins.
Pamplona's running of the bulls —
A ''recortador'' jumps over a bull during a competition at the festival on July 12. Recortadors leap over the bulls in a bloodless version of bullfighting where the one getting the closest and showing the least fear wins.
Andres Kudacki/AP
A man takes a selfie as he runs in front of bulls on Friday, July 11.
Pamplona's running of the bulls —
A man takes a selfie as he runs in front of bulls on Friday, July 11.
RAFA RIVAS/AFP/Getty Images
A bull lifts a reveler on July 11.
Pamplona's running of the bulls —
A bull lifts a reveler on July 11.
Pablo Blazquez Dominguez/Getty Images
Bulls run over revelers on Thursday, July 10.
Pamplona's running of the bulls —
Bulls run over revelers on Thursday, July 10.
Pablo Blazquez Dominguez/Getty Images
The shadow of a bull falls on the cape of bullfighter Ivan Fandino on Wednesday, July 9. Each day's run ends in the bull ring.
Pamplona's running of the bulls —
The shadow of a bull falls on the cape of bullfighter Ivan Fandino on Wednesday, July 9. Each day's run ends in the bull ring.
Javier Lizon/EPA
A bull is seen in the arena during a bullfight on July 9.
Pamplona's running of the bulls —
A bull is seen in the arena during a bullfight on July 9.
daniel Ochoa de Olza/ap
A bull jumps over people in the bull ring July 9.
Pamplona's running of the bulls —
A bull jumps over people in the bull ring July 9.
Daniel Ochoa de Olza/AP
A bull jumps over revelers near the end of the run on July 9.
Pamplona's running of the bulls —
A bull jumps over revelers near the end of the run on July 9.
Pablo Blazquez Dominguez/Getty Images
Fandino is gored by a bull on July 9.
Pamplona's running of the bulls —
Fandino is gored by a bull on July 9.
Daniel Ochoa de Olza/ap
Bullfighter Juan del Alamo kills a bull with his sword on July 9.
Pamplona's running of the bulls —
Bullfighter Juan del Alamo kills a bull with his sword on July 9.
Daniel Ochoa de Olza/ap
A worker carries a dead bull on July 9.
Pamplona's running of the bulls —
A worker carries a dead bull on July 9.
Andres Kudacki/ap
Fandino performs during a bullfight on July 9.
Pamplona's running of the bulls —
Fandino performs during a bullfight on July 9.
Daniel Ochoa de Olza/ap
Padilla arrives to the arena on July 9.
Pamplona's running of the bulls —
Padilla arrives to the arena on July 9.
Daniel Ochoa de Olza/ap
A cow jumps over revelers on July 9.
Pamplona's running of the bulls —
A cow jumps over revelers on July 9.
Daniel Ochoa de Olza/ap
Participants run in front of bulls on July 9.
Pamplona's running of the bulls —
Participants run in front of bulls on July 9.
RAFA RIVAS/AFP/Getty Images
Revelers run on a street in Pamplona on July 9.
Pamplona's running of the bulls —
Revelers run on a street in Pamplona on July 9.
Alvaro Barrientos/AP
Bill Hillmann, of Chicago, <a href="index.php?page=&url=http%3A%2F%2Fwww.cnn.com%2F2014%2F07%2F09%2Fworld%2Fgallery%2Famerican-gored%2Findex.html">is gored on his right leg</a> by a bull on July 9. Hillmann has been running in Pamplona for about a decade, and he recently co-authored a book entitled "Fiesta, How to Survive the Bulls of Pamplona."
Pamplona's running of the bulls —
Bill Hillmann, of Chicago, is gored on his right leg by a bull on July 9. Hillmann has been running in Pamplona for about a decade, and he recently co-authored a book entitled "Fiesta, How to Survive the Bulls of Pamplona."
Daniel Ochoa de Olza/AP
A reveler is pushed by a bull in the bull ring on Tuesday, July 8.
Pamplona's running of the bulls —
A reveler is pushed by a bull in the bull ring on Tuesday, July 8.
Alvaro Barrientos/AP
A worker watches a bullfight on July 8.
Pamplona's running of the bulls —
A worker watches a bullfight on July 8.
Andres Kudacki/ap
Revelers run away from a flaming fake bull during the second day of the festival on Monday, July 7.
Pamplona's running of the bulls —
Revelers run away from a flaming fake bull during the second day of the festival on Monday, July 7.
Andres Kudacki/ap
Bullfighter Miguel Abellan adjusts his capote before the ritual entrance to the arena on July 7.
Pamplona's running of the bulls —
Bullfighter Miguel Abellan adjusts his capote before the ritual entrance to the arena on July 7.
Daniel Ochoa de Olza/ap
A bull is seen in the arena during a bullfight on July 7.
Pamplona's running of the bulls —
A bull is seen in the arena during a bullfight on July 7.
Daniel Ochoa de Olza/ap
Revelers take part in the bull run on July 7.
Pamplona's running of the bulls —
Revelers take part in the bull run on July 7.
Alvaro Barrientos/ap
Bulls and revelers run through Pamplona's streets on July 7.
Pamplona's running of the bulls —
Bulls and revelers run through Pamplona's streets on July 7.
Andres Kudacki/AP
Some bulls fall as they race through Pamplona's narrow streets on July 7.
Pamplona's running of the bulls —
Some bulls fall as they race through Pamplona's narrow streets on July 7.
Daniel Ochoa de Olza/AP
Revelers wait to run with the bulls along Calle Estafeta on July 7.
Pamplona's running of the bulls —
Revelers wait to run with the bulls along Calle Estafeta on July 7.
Pablo Blazquez Dominguez/Getty Images
A child is playfully hit July 7 during the Giants and Big Heads Parade, which is also a traditional part of the San Fermin festival.
Pamplona's running of the bulls —
A child is playfully hit July 7 during the Giants and Big Heads Parade, which is also a traditional part of the San Fermin festival.
Pablo Blazquez Dominguez/Getty Images
Revelers have water thrown on them from a balcony to celebrate the official opening of the San Fermin festivities on Sunday, July 6.
Pamplona's running of the bulls —
Revelers have water thrown on them from a balcony to celebrate the official opening of the San Fermin festivities on Sunday, July 6.
Alvaro Barrientos/AP
Revelers kick off the San Fermin festival with a messy party in Pamplona's town square on July 6.
Pamplona's running of the bulls —
Revelers kick off the San Fermin festival with a messy party in Pamplona's town square on July 6.
Alvaro Barrientos/AP
Revelers hold up traditional red neckties during the official opening July 6.
Pamplona's running of the bulls —
Revelers hold up traditional red neckties during the official opening July 6.
Andres Kudacki/AP
Musicians wearing traditional red berets play during the official opening on July 6.
Pamplona's running of the bulls —
Musicians wearing traditional red berets play during the official opening on July 6.
Alvaro Barrientos/ap