Hell's Half Mile is a challenging Class IV rapid on Upper Clear Creek, characterized by a technical and powerful descent through a narrow, boulder-strewn channel with multiple significant hydraulics. Paddlers must navigate a series of steep drops and tight turns, carefully avoiding the deep, recirculating hole at the bottom of the rapid that can create dangerous entrapment conditions. Precise boat positioning and quick maneuvering are critical to successfully running this intense stretch of whitewater.