If there is one thing you do when visiting the Greek island of Crete, you must hike Samaria Gorge. There are certain epic hikes throughout the world, and the hike through Samaria Gorge National Park is one of them. What makes Samaria Gorge epic? At 16 kilometers, Samaria Gorge is one of the longest gorges in Europe (some sources say the longest, others the second longest), is located in Crete’s only national park, and provides stunning views all day long.