Kolara is a city in South Indian state of Karnataka. It is the headquarters of Kolar District. It is known for being one of gold mining sites in India. It is located at a distance of about 68 kilometres (42 mi) away from Bangalore and 39 kilometres (24 mi) from the Kolar Gold Field. It is situated on the Bangalore to Chennai National Highway-4. The city is located on the southern maidan (plains) region of Karnataka. The Ammerallikere, a tank, forms its eastern boundary. On the north is the Kodikannur tank, the main source of water supply to the city. The nearest railway junction is at Bangarpet at a distance of about 15 km.