Mexico's Borders: North (USA) & South (Guatemala, Belize)

Mexico shares land borders with three nations:

• North: United States of America – 3,145 km (1,954 mi). World's most crossed border. Defined by Rio Grande (Río Bravo) east, Colorado River/land west.
• South: Guatemala – 958 km (595 mi). Jungle/river (Suchiate, Usumacinta) and highlands.
• South: Belize – 276 km (171 mi). Largely defined by Hondo River (Río Hondo).

Maritime borders: Pacific Ocean (west), Gulf of Mexico & Caribbean Sea (east). Maritime boundaries with USA, Cuba, Honduras (EEZ).