DENVER (November 2, 2009)--An unusual Halloween benefit race set a world record.

Organizers of the Denver Gorilla Run say 1,061 people ran 3.5 miles dressed as gorillas and that was enough to set a Guinness World Record for the most people in gorilla costume.

The annual Halloween race raises money for the Mountain Gorilla Conservation Fund to continue the work of Dian Fossey, whose research was the subject of the movie "Gorillas in the Mist."

First-time Denver Gorilla Run racers paid almost $100 to participate.

The registration includes a gorilla suit.