0.12" rain Sun; S-facing decomposed granite; rain Sat → softening
Upper Fireman Hill Bypass is a mountain bike trail in the Boulder, Golden & Nederland area of Colorado. This page tracks its current riding conditions — whether it's hero dirt, dusty, soft, or too muddy to ride — along with the next several days' outlook and the best time of day to ride, so you can decide before you load up.
Open live map & 7-day forecast → All Boulder, Golden & Nederland trails