The distance between Colombo International Airport Ratmalana to Unawatuna Beach is 110 Km by road. You can also find the distance from Colombo International Airport Ratmalana to Unawatuna Beach using other travel options like bus, subway, tram, train and rail. Apart from the trip distance, refer
Directions from Colombo International Airport Ratmalana to Unawatuna Beach for road driving directions!