Georgetown to Idaho Springs Half Marathon
Course HighlightsThe Georgetown to Idaho Springs Half Marathon — affectionately known as the GTIS Half — has been a Colorado running institution for nearly five decades. The point-to-point course follows the historic path of the Argentine Central Railroad through the stunning Clear Creek Canyon, connecting the Victorian mountain town of Georgetown to the gold-rush heritage town of Idaho Springs. The route follows the canyon's gentle contours along Clear Creek, offering dramatic rock wall scenery, rushing whitewater, and views of Colorado's