In the past 3 years Colin Mickow has ascended from marathon newcomer to a 2:11 personal best and member of the United States contingent at the World Championships in July. A tireless worker, Colin shares with us the details of his high-mileage training regimen. Plus, he takes us inside his response to race adversity after getting tripped up at World Champs, and he puts to bed any debate about the best deep dish pizza in his hometown of Chicago. More than anything else in our conversation, I left inspired by the discipline and humility that have helped Colin move to the top of American men’s marathoning.