List of highways numbered 686

Route 686, or Highway 686, may refer to:

Canada

 * Alberta Highway 686
 * Saskatchewan Highway 686

United Kingdom

 * London Buses route 686
 * London Buses route 686

United States

 * in Florida
 * SR 686A see Gateway Expressway
 * in Kentucky
 * in Louisiana
 * in Maryland
 * in Nevada
 * in Ohio
 * in Texas
 * in Virginia