The United States has never been a hotbed of nordic skiing. At the Sochi Olympics, the eked out a sixth-place finish, and even that was considered a success. But Hamilton, who was a member of that team, is beginning to buck the trend. He in Switzerland last year鈥攖he first for an American in 30 years鈥攁nd this winter, at the World Championships in Falun, Sweden, he鈥檚 aiming for an unprecedented medal in the individual classic sprint. Even with a training load equal to a full-time job, he still finds room for the fun stuff.

MIX THINGS UP: 鈥淚鈥檇 go crazy if I had to roller-ski every time my coach told me to, so sometimes I鈥檒l swap in a mountain-bike ride instead. Or, if the waves are really good on the New Hampshire coast, I鈥檒l drive over there at 3 A.M. to surf for two hours at sunrise and be back in time for training. Getting out of the routine helps me feel more balanced as an athlete, but mostly it鈥檚 for my sanity.鈥澛
GO ALL OUT: 鈥泪蹿 you鈥檙e going to break your body down, really break it down. Do intervals and weights on the same day. It鈥檒l hurt鈥攁 lot鈥攂ut you鈥檒l be much stronger for it.鈥
KNOW YOUR WEAKNESS: 鈥淓veryone has a weakness. Mine is my ankle. I crashed in a terrain park ten years ago and never fully recovered. But weaknesses give you something to focus on. I spend a lot of time balancing on a Bosu ball while bouncing a tennis ball off a wall and catching it. It鈥檚 tedious, but those are the kinds of details that make the difference in a race.鈥澛
CUSTOMIZE YOUR FUEL: 鈥淎 lot of athletes are hyper-obsessive about what they eat. But I often need 10,000 calories a day, so I eat what I want, when I want. After any race I have the same thing: gummy bears and a Coke. Just straight sugar.鈥
RESPECT YOUR TIMELINE: 鈥淪ome things you can do at a high level for just a few years, others for a few decades. Nordic skiing doesn鈥檛 take a huge toll on your joints and ligaments, so you can do it well into your seventies. There鈥檚 something very graceful about that.鈥