You can access the Billy Goat Trail C loop from the Carderock National Recreation Area parking areas (red Ps). The trail passes the top of 30 to 50-foot rock cliffs that are a popular climbing and bouldering destination. The C&O Canal connects to the Billy Goat Trail loops B and A to the north.
Directions: From I-495, Take exit #13 to the Clara Barton Parkway, on the Maryland side of the Potomac near Cabin John. Follow the Parkway North to the first exit, Carderock Recreation Area. At the top of the ramp turn left across the Parkway, right to go under the canal.