How to Train Your Dragon #7: How To Ride A Dragon's Storm by Cressida Cowell

Hiccup has three months, five days, and six hours to win the annual Intertribal Friendly Swimming Race--which he must do by coming in last. Along the way, he'll have to discover America, battle Polarserpents, defeat his nemesis Norbert the Nutjob, and get back to the Isle of Berk. It's a tall order for a short Viking. Can he do it?