The longest paved runway in North America is Runway 04/22 at Edwards Air Force Base in California. Measuring 15,000 feet (4,572 meters) in length, this massive runway is primarily used for flight testing and research, including historic Space Shuttle landings and experimental aircraft operations.
Its extraordinary length provides the safety margin needed for high-speed and high-risk test flights, making it a critical asset for U.S. aerospace development.