Benin, a narrow, north–south strip of land in West Africa, lies between latitudes 6° and 13°N, and longitudes 0° and 4°E. Benin is bounded by Togo to the west, Burkina Faso and Niger to the north, Nigeria to the east, and the Bight of Benin to the south. The distance from the Niger River in the north to the Atlantic Ocean in the south is about . Although the coastline measures , the country measures about  at its widest point. Four terrestrial ecoregions lie within Benin's borders: Eastern Guinean forests, Nigerian lowland forests, Guinean forest-savanna mosaic, and West Sudanian savanna. It had a 2018 Forest Landscape Integrity Index mean score of 5.86/10, ranking it 93rd globally out of 172 countries.