The Golo is the longest (90 kilometres (55.9 mi)) river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 on the island of Corsica

Corsica

Corsica is an island in the Mediterranean Sea. It is located west of Italy, southeast of the French mainland, and north of the island of Sardinia....

, France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

. Its source is in the mountainous middle of the island, south of Monte Cinto

Monte Cinto

Monte Cinto is the highest mountain on the island of Corsica, a région of France. Its altitude is 2,706 m and so is its prominence, making it one of the most prominent peaks in Europe....

. It flows generally northeast, through Calacuccia

Calacuccia

Calacuccia is a commune in the Haute-Corse department of France on the island of Corsica.-Population:-References:*...

 and Ponte-Leccia, and ends in the Tyrrhenian Sea

Tyrrhenian Sea

The Tyrrhenian Sea is part of the Mediterranean Sea off the western coast of Italy.-Geography:The sea is bounded by Corsica and Sardinia , Tuscany, Lazio, Campania, Basilicata and Calabria and Sicily ....

 approximately 20 km south of Bastia

Bastia

Bastia is a commune in the Haute-Corse department of France located in the northeast of the island of Corsica at the base of Cap Corse. It is also the second-largest city in Corsica after Ajaccio and the capital of the department....

, near the Bastia - Poretta Airport. Its entire course is in the Haute-Corse

Haute-Corse

Haute-Corse is a French department. It constitutes the northern part of the island of Corsica.- History :The department was formed on 15 September 1975, when the department of Corse was divided into Haute-Corse and Corse-du-Sud...

 département.