The official race route contained three individual time trial events.

In a typical year, an estimated 15 million people line the race route and another 160 million worldwide watch on television.

The official race route contained a single individual time trial event.

That area blankets the whole race route, she said.

The race routes were pieced together from branching road segments.

"People play music along the race route and everyone has a great time."

The race route was entirely within the United States.

In addition, elevation changes over a race route can dramatically change the amount of power needed to travel the route.

The race route is closed to any car without an official sticker for several hours before and for an indefinite period after the start.

The current race route is an out and back course.