Gelligaer is located in Cardiff city, United Kingdom at the 51.6644, -3.2561 coordinates. Distance from Gelligaer to other cities. are listed below, click on the city name to find distance between. Distance from Gelligaer to Swansea 48 km, to Newport 20 km, to Rhondda 13 km. The green marker indicates the location of Gelligaer.