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Jeffrey D. Allred, Deseret News
Roughly 500 truckloads of dirt are arranged into a race course at Rice-Eccles Stadium in preparation for the Monster Energy Supercross tour at the University of Utah in Salt Lake City on Tuesday, April 23, 2013.

SALT LAKE CITY — When thousands of supercross fans descend on Rice-Eccles Stadium this weekend for the Monster Energy Supercross tour, they'll see daring feats at white-knuckle speed.

But they won't see the hours of preparation it takes to transform the stadium into a supercross terrain park. Organizers Tuesday began filling Rice-Eccles with dirt by the truckload in preparation for Saturday's event.

Denny Hartwig, director of public relations for Felt Motor Sports, said the supercross tour begins January in Anaheim, Calif., and makes 17 stops around the country. The Salt Lake City event stands out, Hartwig said, partly because of the interest in action sports in the state and because it comes late in the tour.

"It sounds cliche, but the crowd in Salt Lake City is a very knowledgeable crowd," he said. "It's an important stop for us because it sets the stage for the final race in Las Vegas next week."

Monster Energy Supercross by the numbers

• 6,500 tons of dirt delivered to Rice-Eccles Stadium in 500 truckloads. Much of the dirt is stored nearby and reused for future events.

• It takes a 22-worker crew 82 hours to set up the track and 24 hours to break it down.

• 12 pieces of heavy equipment (bulldozers, loaders, etc.) are used in the track preparation.

• 3,600 pieces of plywood make up a temporary floor placed under the track dirt.

• 80 supercross competitors are featured in the event.

• 40,548 people attended the event last year.

• 17 stops on the Monster Energy Supercross tour. Salt Lake City is No. 16.

• Five consecutive years the supercross tour has stopped in Salt Lake City.

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