The sharp turn forces bulls to decelerate rapidly, often causing them to lose grip on the paved surface.
The wooden barricades at this corner are reinforced specifically to withstand the impact of bulls weighing over 500 kilograms.
The intersection is located just after the 'Dead Man's Corner' if running in reverse, but is primarily defined by the turn into the Estafeta stretch.
Local runners often wait near this curve to lure bulls away from the fences, a practice known as 'citando'.
The cobblestones at this junction are periodically treated or replaced to manage friction for both runners and livestock.
The area is strictly part of the official, permitted bull run course that concludes at the Plaza de Toros.
The Estafeta curve, also known as the Mercaderes-Estafeta junction, is the most iconic and dangerous point of the San Fermín bull run in Pamplona. It marks the transition where bulls must navigate a sharp 90-degree turn from Calle Mercaderes onto the long, narrow Calle Estafeta. During the run, the bulls frequently lose their footing and slide into the wooden barricades on the outside of the turn. This specific curve has been the site of numerous severe gorings and pile-ups throughout the history of the festival. The street layout remains largely unchanged since the medieval period, confining the animals and runners into a constricted path. It serves as a focal point for spectators and runners who gather annually to witness or participate in the traditional encierro.
From the upper street level looking down toward the junction of Calle Mercaderes.
Avoid standing directly behind the wooden barricades during the run, as bulls frequently impact these structures with high force.
The streets become extremely crowded; arrive early to secure a viewing spot if you are not running.
If running, study the trajectory of the bulls at this turn beforehand, as the bulls' momentum often carries them into the outer wall.
Avoid attempting to run with the bulls without proper preparation and awareness of the specific risks associated with this corner.
Active for the San Fermín festival in July; the street is open to public traffic the remainder of the year.
Do not climb or lean over the safety fences during the event; always follow instructions from local authorities.
