Trek Factory rider Laurent Didier of Luxembourg won Stage 5 Friday with a burst into Breckenridge. He held off Janier Acevedo of Garmin-Sharp and Rob Britton of Team SmartStop at the end of the 104-mile stage.
His winning time was three hours, 50 minutes, 38 seconds. The race included rain and temperatures in the 40s over Hoosier Pass.
Van Garderen is favored to win Saturday's time trial on Vail Pass before the weeklong competition ends in downtown Denver on Sunday.