Pamplona's 'Running Of The Bulls' Is One Insane Street Party [PHOTOS]

The annual running of the bulls in Pamplona, Spain, kicked off today, sending thousands of thrill-seekers from all over the world sprinting down the city's narrow streets, ducking and dodging the horns and bodies of massive bulls running at an average speed of 15 miles an hour.

Many of the participants were likely still feeling the effects of sangria consumed the night before, partying in celebration of the beginning of the 9-day San Fermin Festival, of which the running of the bulls is a central tradition.

Four people were injured in the first run of the festival, the AP reports.

The following photos will either make you want to hop on the next flight to Pamplona, or stay far away from a place where bulls roam the streets.