At the 2009 World Championships in the Czech Republic, Finland’s Matti Heikkinen combined a well-timed peak with a great pair of skis to take bronze in the 15 k classic, on a challenging wax day. That medal was Heikkinen’s first time on the podium in an international race. Since then, he’d finished in the top three a few times more—twice on the World Cup, and also in a couple of stages of the Tour de...