Three people were gored and a further two people suffered head trauma during the first day of Spain's best-known bull-running festival in the northern Spanish town of Pamplona on Sunday. 

One man was stretchered onto an ambulance shortly after the dash through the medieval town center's narrow streets to the bullring, which lasted two minutes and 41 seconds, said the Red Cross.  

Thousands of runners, dressed head to toe in white, with bright-red neckerchiefs, gather every year for the traditional morning run, after which the animals are kept in the bullring until the afternoon's fights.  

A total of 53 people were treated by the Red Cross.  

Runners often get injured at traditional bull-runs in Spain, but no one has died at Pamplona's San Fermin festival since Spaniard Daniel Jimeno was gored in the neck by a Jandilla bull in 2009. 

This year, the bulls were from cattle breeder Puerto de San Lorenzo, whose bulls have been responsible for one incident in the past, in which one person was gored on the opening day of the festival last year. 

Locals and tourists alike will join in the 8 a.m. (0600 GMT) run every morning until next Sunday. 

The festival regularly stokes debate about the treatment of animals. Protesters lay half-naked on the street with fake spears coming out of their backs to protest against what they see as cruelty on Friday.