This trip took us all day, driving south from Kailua through the coffee growing areas, to the southernmost point in the USA, to Volcanoes National Park, Hilo on the eastside, round the northernmost point of the island including some amazing valleys and ocean views, back to Kailua from the north. The most amazing thing is that there is 13 different climate zones on this one island - its an amazing feeling to go from tropical to desert to forest within a hour, and you really get a sense of how geologically young the island is.