Several thousand thrill-seekers tested their bravery by dashing alongside six fighting bulls through the streets of the northern Spanish city of Pamplona on the first day of the running of the bulls at the annual San Fermin festival on Sunday.

Despite a large crowd of participants because the run coincided with a weekend, only four people were treated for injuries and no one was gored, officials said.

The regional government of Navarra, which is responsible for organizing the festival, said in a statement that none of the four are seriously injured.

A 24-year-old Australian, whom it identified only by the initials J. C., was being treated for bruising, as was a 44-year-old British national. An American citizen identified only as C.S. was also receiving treatment for a minor injury, as was a 36-year-old native of Pamplona, the statement said.