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March 16, 2026

Empty shot of Calle Estafeta - the longest stretch of the bull run route.

The Cabestros: The Steers That Guide the Bulls Through Pamplona

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View of the church steeple of Iglesia de San Saturnino, the patron saint of Pamplona. His church. Located in the Casco Viejo (old city) of Pamplona.

The Suelto: When a Bull Separates from the Herd

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Revelers on balconies waiting for the bull run (encierro) to start

How the Herd Moves: Understanding Bull Behavior During the Encierro

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Crowd of revelers during the day, in sun and shade, enjoying the fiesta - shows how crowded it gets.

The Ayuntamiento Stretch: Running Past City Hall

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Runners navigating the crowded streets of Pamplona during the running of the bulls - Encierro Crowd Dynamics

Running Uphill: The Physics of Santo Domingos Incline

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Close-up of a runner executing 'The Check' during the San Fermin festival - Encierro Awareness

Why the Encierro Route Has Not Changed in Centuries, And Why That Matters

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Runners sprint to avoid a lone bull (toro suelto) and Pamplona's Running of the Bulls

The Barreras: Your Emergency Exits on the Encierro Route

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End of Calle Estafeta - runners trying to keep pace with the bulls. Three cabestros out front, black bulls running up the street. View from a balcony.

Spatial Awareness on the Encierro Route: How to Read the Run in Real Time

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Revelers on balconies along Calle Estafeta, looking down, waiting for the bull run (encierro).

Understanding the Rocket System: What Each Cohete Means

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