Kotroni Airport (ICAO: LGKN) is a small airport situated northwest of Marathonas, Greece. It has one of the smallest runways in the world. Both runways are mostly used by helicopters because Kotroni is normally a base for the Hellenic Navy Helicopter Command. To indicate that helicopters land at the site, the airport has helipad signs on the surface of the runways.
Latitude: 38° 08' 9.42" N
Longitude: 23° 57' 3.29" E