There are multiple islands that make up Koh Lanta. Getting to this location from Phuket Island requires either taking to the sea by a boat or driving your vehicle (motorbike or car) on multiple ferries to reach the last of the islands. It is located in Krabi province and is the southernmost island in the area. It also sits near Trang province on the border of southern Krabi. From Phuket, the island is about 74 km. over the water or a 253 kilometers (4.5 hours) long drive from Patong Beach.
Your ultimate destination, the longest and last island in Koh Lanta, is 22 km. long and about 4 km. wide. If you’re going to travel to this island, there are a wide choice of package tours you can purchase. A ferry from Phuket takes about ten hours to the Island and is probably a much better trip than taking a vehicle on the roads all that distance.