The E4 European long distance path or E4 path is one of the European long-distance paths. Starting at Tarifa Andalusia, located at the southernmost end of the Iberian Peninsula, across the Strait of Gibraltar facing Morocco, it continues through Spain, France, Switzerland, Germany, Austria, Hungary, Romania, Bulgaria and Greece to end in Cyprus. It also visits the Greek island of Crete. It is more than 10,000 kilometres (6,200 mi) long, but the route through Romania and part of Bulgaria is not yet completely defined. An alternative route through Serbia, instead of Romania, has been defined.