The Long Walk by Stephen King

In a dystopian near-future, America has fallen on hard times. Sixteen-year-old Ray Garraty is about to compete in the annual grueling match of stamina and wits known as the Long Walk. One hundred boys must keep a steady pace of four miles per hour day and night, without ever stopping. The winner gets “The Prize”—anything he wants for the rest of his life. But the rules of the Long Walk are harsh and the stakes could not be higher. There is no finish line—the winner is the last man standing. Contestants cannot receive any outside aid whatsoever. Slow down under the speed limit and you’re given a warning. Three warnings and you’re out of the game—forever.