The week-long San Fermin festival in Pamplona, Spain, kicked off on July 6, 2011 with the traditional Chupinazo rocket launch. The annual festival, best known for its daily running of the bulls, will run until July 14. Start the slideshow to view the best pictures of running of the bulls from the festival.

San Fermin festival in Pamplona Day 1
Revellers hold up red scarves during the start of the San Fermin Festival in Pamplona July 6, 2011. REUTERS/Vincent West
San Fermin festival in Pamplona Day 2
Mexican bullfighter Arturo Saldivar gets tripped by a bull during the first bullfight of the San Fermin festival in Pamplona July 7, 2011. REUTERS/Susana Vera
San Fermin festival in Pamplona Day 3
Spanish bullfighter Jesus Martinez "Morenito de Aranda" performs a pass during the second bullfight of the San Fermin festival in Pamplona July 8, 2011. REUTERS/Vincent West
San Fermin festival in Pamplona Day 4
A "recortador" performs with a fighting bull during an exhibition of acrobatic skills at the bullring on the fourth day of the annual San Fermin festival in Pamplona July 9, 2011. REUTERS
San Fermin festival in Pamplona Day 5
Spanish bullfighter Joselillo performs a pass to a bull during the third bullfight of the San Fermin festival in Pamplona July 9, 2011. REUTERS/Joseba Etxaburu
San Fermin festival in Pamplona Day 6
Spanish bullfighter Antonio Ferrera inserts "banderillas" into a bull during the fifth bullfight of the San Fermin festival in Pamplona July 11, 2011. REUTERS/Susana Vera
San Fermin festival in Pamplona Day 7
Spanish bullfighter Julian Lopez "El Juli" performs during a bullfight at the San Fermin festival in Pamplona July 12, 2011. REUTERS/Vincent West