It's an annual tradition that attracts people from all over the world.

The Running of the Bulls Pamplona sometimes has accidents, but this one comes as a surprise.

Bill Hillman, 32, co-author of the book "Fiesta: How to Survive the Bulls of Pamplona,'' was gored by a lone bull who had separated from the pack and also gored another man, according to the Today Show.

Hillman co-wrote the book and writes how to survive The Running of the Bulls in Pamplona, but after his accident his book reviews on Amazon weren't positive.

To read more on this story, visit Today.com.

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