Dave Mackey, Goeff Roes, Scott Jurek, and Anton Krupicka at the Boulder Trail Runners’ Q&A. Published on January 18, 2011 in Video Q&A with Jurek, Krupicka, Roes & MackeyFull resolution (600 × 450) Dave Mackey, Goeff Roes, Scott Jurek, and Anton Krupicka at the Boulder Trail Runners’ Q&A. Photo by Jenny Uehisa.