Route 340, also known as Road to the Isles, is a road in the Canadian province of Newfoundland and Labrador passing through the towns of Lewisporte, Summerford and Twillingate, all in The Isles of Notre Dame region of the province. The highway has a total length of 106.3 kilometres (66.1 mi) and a speed limit in the range of 40–80 km/h depending on whether the road is passing through a settlement. Route 340 is the only road connection that New World Island and Twillingate Islands have with the main island.