Is Castor Cutoff dry and rideable today? Here is the current mud, dust, and snow read, the 10-day forecast, and the best time to ride, refreshed every morning.
recent rain observed at a nearby gauge (Open-Meteo under-read it)
Castor Cutoff 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, alongside the ten-day outlook and the best time of day to ride. We build the read from real weather, soil, terrain, and snowpack data and refresh it every morning, so you can decide what to ride before you load up the bike.
Conditions change daily. The live reading at the top of this page shows whether Castor Cutoff is hero dirt, tacky, soft, or too muddy to ride today, refreshed every morning from local weather, soil, and terrain data.
The best window depends on heat, shade, and how wet the dirt is. Open the live forecast to see the recommended time of day to ride Castor Cutoff today and across the next ten days. Open the live forecast →
It comes down to recent moisture. Castor Cutoff rides as hero dirt when the soil holds a little moisture and turns dusty and loose once it dries out or sees heavy traffic. The live reading at the top of this page shows today's dirt quality, hero dirt, tacky, dusty, or soft, refreshed every morning.
Castor Cutoff is about 0.2 mi, sitting between 6,549–6,585 ft. It is a mountain bike trail in the Boulder, Golden & Nederland area of Colorado. See the elevation profile →
Castor Cutoff is a mountain bike trail in the Boulder, Golden & Nederland area of Colorado, between about 6,549–6,585 ft. Open the live map for the trailhead location, a GPX download, and today's conditions. Open the live map →
Yes. Use the Download GPX button on this page to save a GPX track of Castor Cutoff, built from real OpenStreetMap trail geometry and ready for your GPS unit, bike computer, or phone. The live map also has the trailhead and today's conditions. Download GPX →
Castor Cutoff is mostly mixed soil, which varies from trail to trail. That is a big part of why the live mud reading reacts the way it does after rain, and why some nearby trails dry out faster than others.
Castor Cutoff tops out around 6,585 ft. Higher Colorado trails hold snow later into spring, so this page tracks snow coverage and the estimated melt-out alongside the dry-dirt read. Check the current reading and the 10-day outlook before you head up. See the 10-day outlook →