The Hollywood stars have started shooting scenes that imitate the famous bull run held each year in northern Spain.
During The Pamplona Bull Run, crowds race ahead of a herd of thundering bulls, which can weigh up to 1,500 pounds each, along a 900 yard course of cobbled streets. The run is held in the city each July and was made famous by Ernest Hemingway’s 1926 novel The Sun Also Rises.
Earlier this month, seven bulls escaped durng the film’s rehearsals, slightly injuring two women.
Knight & Day opens in North America in July 2010.