Britannica
Sources used in this answer
How long is the Danube River?
Created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
Danube River
The Danube River basin and its drainage network.
The Danube River flows for approximately 1,770 miles (2,850 km) from its source in the Black Forest mountains of Germany to its mouth on the Black Sea. It is the second longest river in Europe, surpassed only by the Volga River.1