Regional positioning system using timed pulses. In an embodiment, a plurality of beacon devices are selected by a processor of a target device. For each beacon device, a connection to the beacon device is established, a first pulse is transmitted to the beacon device, a second pulse is received from the beacon device, a flight duration, including both a time of flight of the first pulse and a time of flight of the second pulse, is timed, and a distance to the beacon device is calculated based on the flight duration. A location of the target device is then computed based on the calculated distances for the selected beacon devices and the locations of the beacon devices.