

Belize–Guatemala border
Two straight lines through the forest and a river, drawn by an 1859 treaty with Britain. Guatemala says the treaty is void because a road it promised was never built, and the whole border is now before the World Court.
Written from cited sourcesLast checked 29 September 2026Suggest a correction
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Belize →
Guatemala →
Logwood cutters and a treaty
English settlers began cutting logwood and mahogany on the coast in the 17th century. Spanish treaties of 1763, 1783 and 1786 let them work there, within limits set by the Hondo, Belize and Sibun rivers, and Spain’s last attack on the settlements was defeated in 1798.[1]
On 30 April 1859 Britain and Guatemala signed a boundary treaty. It runs the line up the middle of the Sarstoon river to Gracias a Dios Falls, then in a straight line to Garbutt’s Falls on the Belize river, then due north to Mexico. A joint commission marked the southern part in 1861, but the markers in between later disappeared; a 1929 commission re-established only the two at the falls.[1]
“Beginning at the mouth of the river Sarstoon (Sarstún) in the Bay of Honduras, and proceeding up the midchannel thereof to Gracias á Dios Falls; then turning to the right and continuing by a line drawn direct from Gracias á Dios Falls to Garbutt's Falls on the river Belize, and from Garbutt's Falls due north until it strikes the Mexican frontier.”[1]
The road that wasn’t built
Article 7 of the treaty committed both sides to build the easiest link, by road or river, between the Atlantic coast near Belize and Guatemala City. An 1863 convention had Britain pay £50,000 towards a road, but it was never ratified. Guatemala argues that Britain voided the treaty by failing to carry out Article 7; Britain denied that it alone was responsible.[1]
On 8 December 2008 Guatemala and Belize agreed to put the claim to the International Court of Justice, asking it to rule on Guatemala’s claims to land, islands and sea and to fix the boundaries. The case reached the court on 7 June 2019. Both sides agreed to accept its decision and to set up a joint commission to mark the line afterwards.[2]
Timeline
1783
Treaty of Versailles
Spain lets British settlers cut wood between the Belize and Hondo rivers.[1]
185930 April 1859
Boundary treaty
Britain and Guatemala set the line; Article 7 promises a road.[1]
1861
Southern sector marked
A joint commission sets pillars between the two falls.[1]
1863
Road convention
Britain offers £50,000 for a road; the deal is never ratified.[1]
20088 December 2008
Special Agreement
Both agree to take the claim to the ICJ.[2]
20197 June 2019
Case filed
The ICJ is seised of the dispute.[2]
More borders
Sources
- [1]International Boundary Study No. 8: Belize (British Honduras) – Guatemala Boundary · US Department of State, Office of the Geographer
- [2]The Court seised of a dispute between Guatemala and Belize (Press Release 2019/25) · International Court of Justice · 12 June 2019
Map geometry from Natural Earth via world-atlas. See credits.