Guatemala–Honduras border

The Guatemala–Honduras adjacency line is a disputed international boundary separating Guatemala on the north and west from Honduras on the south and east.

For Honduras, it is the shortest border, coming after those with Nicaragua and El Salvador.

The border begins at the mouth of the Motagua River in the Gulf of Honduras, then proceeds upstream.

It continues towards the southwest, following several straight lines between geographic landmarks, divides between watersheds, and rivers and streams to its end at the tripoint with El Salvador at the summit of the Montecristo Massif.

A demarcation commission headed by Sidney H. Birdseye conducted an areal survey and erected 1,028 boundary markers between 1933 and 1936.