| geographical order |
km |
|
orderd by length |
km |
| Germany |
577 |
|
Romania |
1.075 |
| Austria |
350 |
|
Serbia |
588 |
| Slowakia |
172 |
|
Germany |
577 |
| Hungary |
416 |
|
Bulgaria |
471,5 |
| Croatia |
137,50 |
|
Hungary |
416 |
| Serbia |
588 |
|
Austria |
350 |
| Romania |
1.075 |
|
Croatia |
137,50 |
| Bulgaria |
471,5 |
|
Ukraine |
180 |
| Ukraine |
180 |
|
Slowakia |
172 |
| Moldova |
0,927 |
|
Moldova |
0,927 |
Total length
- Navigable course from Kelheim 2.415 km
- From the confluence of Briegach, Breg and the Danube source 2.845 km
- From the Breg source 2.888 km
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