Saint Martin is a tropical island in the northeast Caribbean, approximately 300 km (186 miles) east of Puerto Rico. The 87 km2 island is divided roughly in half between France (53 km2) and the Netherlands Antilles (34 km2); it is the smallest inhabited sea island divided between two nations. The southern Dutch half comprises the Eilandgebied Sint Maarten (Island area of St. Martin) and is part of the Netherlands Antilles. The northern French half comprises the Collectivité de Saint-Martin (Collectivity of St. Martin) and is an overseas collectivity of France.
The main towns are Philipsburg (Dutch side) and Marigot (French side).
The highest hilltop is the Pic Paradis (424 m) on center of a hill chain (French side). There is no river on the island, but many dry guts. Hiking trails give access to the dry forest covering tops and slopes.