The Klingle Valley Trail is a trail in the northwest quadrant of Washington, D.C.
In 1990, erosion led to the closure of a 0.75-mile section of the road between Cortland Place and Porter Street. This touched off a decades-long dispute between people who wanted the road repaired and those who wanted to keep the portion in Rock Creek Park free of automobile traffic. In 2017, that portion of Klingle Road became Klingle Valley Trail, reserved for hikers and bicyclists.[1]