Mexico shares international borders with three nations:
southeast, the Guatemala–Mexico border, measuring 871km (541miles)[3] and touches the states of Campeche, Tabasco and Chiapas, and includes stretches of the Río Usumacinta, Río Salinas and Río Suchiate.
Five nations and Mexico share a marine border:
Based on six locations and spanning 263 kilometers, the 2005 pact establishes the maritime border between Mexico and Honduras. In 1976 accord established Mexico's and Cuba's maritime boundary.
The United States and other nations have three accords dating back to 1970, 1978, and 2000 that have established a shared maritime boundary of 785 km (565 km in the Pacific Ocean and 621 km in the Gulf of Mexico).