The run itself is safer for both the bulls and participants than the Pamplona event, Dickens said. In Spain — where 15 people have died running with the bulls in the last 100 years — the bulls' path is confined by buildings and narrow streets without escape routes, so that it's possible for a bull to run someone into a corner. The terrain of the cobblestone streets hurts the bulls, which Dickens said doesn't matter much to Spaniards as the bulls are killed at the end of the event