“Entrance options for the longer Grand Ridge ride up to Duthie Hill or down to the Preston Trail.
— Daniel Grillo
Coal Mine Loop is a short loop that allows you to mix it up on either your climb or descent of Grand Ridge. The trail is largely benchcut out of the hillside, and provides for some fast and flowing descents as well as a some steep climbs.
There are a few small stream crossings that represent most of the technicality on the trail. This one allows you to add a little variation to your Grand Ridge ride!