By Case Keefer, Las Vegas Sun

For most people, Kentucky Derby betting season lasts about three days.

It’s much longer in Las Vegas, as the anticipation for the annual Run for the Roses builds over the course of several months from the moment sports books first release future odds on the race.

William Hill sports books posted their initial lines for Saturday’s race in November — to an enormous response.

“It’s amazing, to be honest, how much business we’ve written this year,” William Hill Director of Trading Nick Bogdanovich said. “It’s scary. It’s more than I’ve ever seen. It’s at least double over last year already.”

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