A quick, yet deceivingly tough, first stage of the US Pro Challenge saw riders take on the now ubiquitous Aspen-Snowmass circuit. With three laps to sort out the field, riders fought hard in the oxygen-deprived mountain terrain. Even after the first lap it was clear that the altitude had taken a toll.
With the WorldTour teams of Cannondale and BMC setting pace on the front, the break was held to a couple of minutes gap. But the real excitement came much earlier, when the riders first arrived in town to a massive, enthusiastic crowd. After a few neutral circuits, the races was on.