The A4 Highway is the longest highway in Sri Lanka

Sri Lanka

Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka is a country off the southern coast of the Indian subcontinent. Known until 1972 as Ceylon , Sri Lanka is an island surrounded by the Indian Ocean, the Gulf of Mannar and the Palk Strait, and lies in the vicinity of India and the...

, at 430 kilometres (267.2 mi) in length. It connects Colombo

Colombo

Colombo is the largest city of Sri Lanka. It is located on the west coast of the island and adjacent to Sri Jayawardenapura Kotte, the capital of Sri Lanka. Colombo is often referred to as the capital of the country, since Sri Jayawardenapura Kotte is a satellite city of Colombo...

 with Batticaloa

Batticaloa

Batticaloa is a city in the Eastern province of Sri Lanka. It is the seat of the Eastern University of Sri Lanka. It is on the east coast, south by south east of Trincomalee, and is situated on an island.-Etymology:...

, through a large number of important cities in Western, Sabaragamuwa, Uva and Eastern provinces.

The highway passes through Kirulapone

Kirilapone

Kirilapone is a suburb in Colombo, Sri Lanka....

, Maharagama

Maharagama

Maharagama is a Town, Municipal Area in the Colombo District and a suburb of Colombo Sri Lanka. Situated on the High-Level Road about 15 km away from the centre of the commercial capital Colombo, Maharagama is the city with the third largest population , in Sri Lanka. It developed rapidly in...

, Homagama

Homagama

Homagama is a town situated 24km from the city of Colombo in the Western Province of Sri Lanka. The Homagama pradeshiya sabha consists of the Homagama divisional secretariat division and 10 GN division of Padukka DS division. The total Land area is about is 137 km² of 90 GN division. The...

, Hanwella

Hanwella

Hanwella is a small town in Sri Lanka, situated about 30 km from Colombo, the commercial capital of the country. Hanwella lies on the Colombo-Ratnapura main road, on the banks of the Kelani River.-Geography:...

, Avissawella

Avissawella

Avissawella, also known as Seethawakapura or Seethawaka, is a town along the A4 route from Colombo on the Western Coast to Kalmunai in the Eastern Coast of Sri Lanka via Ratnapura, Pelmadulla, Balangoda and Wellawaya.- Overview :...

, Eheliyagoda, Kuruwita

Kuruwita

Kuruwita is a town in the Ratnapura District of Sabaragamuwa Province of Sri Lanka. It is 120 km from Colombo. It used to be served by a narrow gauge branch of the national railway system....

, Ratnapura

Ratnapura

- Floods :The town of Ratnapura is situated in the flooding plain of the river Kalu. The town experiences regular floods usually in the month of May. There is no large dam across the Kalu, so this leaves the city at the mercy of nature's forces every year. Several proposals have been made to reduce...

, Lellopitiya, Pelmadulla, Balangoda

Balangoda

Balangoda is a town in Sabaragamuwa Province of Sri Lanka. Its 143 km away from Colombo and 43 km away from Ratnapura. It is the one of biggest towns of the Ratnapura District which is one of the two districts belonging to Sabaragamuwa Province . According to the 2001 census Balangoda has a...

, Beragala

Beragala

Beragala is a small town in Sri Lanka. It is located in Badulla District of Uva Province, Sri Lanka. It is located 183 km away from Colombo along the A4 Highway...

, Koslanda, Wellawaya, Buttala

Buttala

Buttala is a town in Sri Lanka. It is located in Monaragala District of Uva Province, Sri Lanka.-History:The name Buttala or ‘Bath hala’ which is said to have been given in the times of King Dutugemunu. A large number of soldiers located in the area . They had been fed from the plentiful of rice in...

, Monaragala, Liyangolla, Siyambalanduwa, Hulanuge, Lahugala, Pottuvil

Pottuvil

Pottuvil ‍or Pothuvil or Poththuvil is a predominantly Muslim town in the Ampara District of Sri Lanka, located along the Eastern coast of the Island, it is 4 km due North of the popular tourist destination Arugam Bay. It was affected by 2004 Indian Ocean tsunami....

, Komari, Thirukovil, Akkaraipattu

Akkaraipattu

Akkaraipattu is a town in the Ampara District of Sri Lanka, and is located along the Eastern coast of the Island. Akkaraipattu consists of over 35,000 people who settled in this area many centuries ago...

, Oluvil, Karaitivu

Karaitivu (Ampara)

Karaitivu is a coastal village situated in the Eastern Coast of Sri Lanka about 30 miles south of Batticaloa and is next to Kalmunai town. This is one of the oldest surviving village settlements in the Ampara District.-Landscape:...

, Kalmunai

Kalmunai

Kalmunai is a municipality within the Ampara District of Eastern Province of Sri Lanka. It had a total population of 91,457 as of 2001. And It is the one and only Muslim majority municipality in the country. There were Sri Lankan Muslims, Sri Lankan Tamils, Sinhalese, and Burghers with the Moors...

, Periyakallar, Chettipalayam, Arayampathy and Kattankudy

Kattankudy

Kattankudy or Kattankudi is a small city in Eastern province of Sri Lanka. It was the site of the Kattankudy mosque massacre of 1990.With over 40,000 inhabitants, Kattankudi is one of the few cities in Sri Lanka where ethnic Moors form the over all majority of the population...

.