Dozens of people have been trampled in Spain’s Pamplona bull run when they were trapped at the narrow entrance to the bullring.

Huge crowds of thrill-seekers got a scare as they fled fighting bulls charging through the city in the opening run of Spain’s San Fermin festival.

Spain’s San Fermin festival is well known for its annual crop of gorings during the bull-running, but sex crimes are a less-publicised problem.

Authorities say an Australian man was gored in the leg and three other people were injured when daredevils ran with bulls at the San Fermin festival.