Burundi–DR Congo border
Down the Rusizi river and Lake Tanganyika, in the western branch of the Great Rift Valley, fixed by Belgium and Germany in 1910. In December 2025 M23 rebels took Uvira, across the lake’s tip from Burundi’s largest city, and tens of thousands fled across the border.
Written from cited sourcesLast checked 29 September 2026Suggest a correction
See it on the globe:Burundi →DR Congo →
Belgian Congo and German East Africa
In 1885 the Congo Free State of King Leopold II declared eastern limits that ran in straight lines towards Lake Tanganyika. Burundi, then Urundi, was part of German East Africa, and a Belgian–German convention of 11 August 1910 replaced Leopold’s claims with today’s line. After World War I Belgium ran Ruanda-Urundi as a League of Nations mandate and then a UN trusteeship.[1]
Congo became independent on 30 June 1960 and Burundi on 1 July 1962. North of the lake the border follows the meandering Rusizi and one of its side channels through marshland; to the south it runs down the middle of Lake Tanganyika. In 1965 the only important road across it linked Bujumbura in Burundi with Uvira in Congo.[1]
The fall of Uvira
Uvira sits at the northern end of Lake Tanganyika across from Bujumbura, and by late 2025 it was the last major area of South Kivu under Congolese government control. The M23/AFC rebel alliance entered the city on 9 December 2025 and took full control the next day. Burundian authorities closed the Kavimvira–Gatumba crossing.[2]
People began crossing into Burundi on 5 December, on foot and by boat. By 19 December UN figures showed more than 84,000 people had fled to Burundi from the offensive, and UNHCR said more than 200,000 had now sought refuge there. Washington accused Rwanda of violating a peace accord; Rwanda denies backing M23.[3] The rebels began pulling back from Uvira within a week under international pressure, and the crossing reopened on 23 February 2026.[2]
Timeline
18851 August 1885
Congo Free State limits
Leopold’s state declares its eastern border.[1]
191011 August 1910
Belgian–German convention
Today’s Burundi–Congo line is fixed.[1]
196030 June 1960
Congo independent
The Belgian Congo becomes independent.[1]
19621 July 1962
Burundi independent
Urundi becomes the Kingdom of Burundi.[1]
202510 December 2025
Uvira falls
202623 February 2026
Crossing reopens
The Kavimvira–Gatumba post reopens.[2]
More borders
Sources
- [1]International Boundary Study No. 48: Burundi – Democratic Republic of the Congo (Kinshasa) Boundary · US Department of State, Office of the Geographer · 30 April 1965
- [2]Hundreds return from Burundi to DRC as border shut by M23 fighting reopens · Al Jazeera · 25 February 2026
- [3]Tens of thousands flee DR Congo to Burundi amid rebel takeover of key city · Al Jazeera · 19 December 2025
Map geometry from Natural Earth via world-atlas. See credits.