Scott Jurek: 'Being uncomfortable brings us back to our roots'

Ultrarunning legend Jurek on his toughest race, his love of tempeh and why he’s running the Boston marathonYou’re a famed ultramarathoner. How come you’re running the Boston marathon? I’m a lover of all distances and I love to jump into marathons. Boston is such a special race, the energy, the people, the history [Boston is the world’s oldest annual marathon]. I usually run guiding a blind runner or helping a friend. It’s my chance to give back. This time I&rs