| Length (km) | River | % Correct |
|---|---|---|
| 2860 | Danube | 98%
|
| 1230 | Rhine | 95%
|
| 3692 | Volga | 94%
|
| 2287 | Dnieper | 79%
|
| 1091 | Elbe | 78%
|
| 1012 | Loire | 78%
|
| 1047 | Vistula | 72%
|
| 1870 | Don | 68%
|
| 1038 | Tagus | 60%
|
| 1362 | Dniester | 53%
|
| 2428 | Ural | 41%
|
| 940 | Sava | 31%
|
| 1020 | Daugava | 19%
|
| 1809 | Pechora | 18%
|
| 1805 | Kama | 15%
|
| 965 | Tisza | 13%
|
| 1500 | Oka | 7%
|
| 953 | Prut | 7%
|
| 914 | Neman | 6%
|
| 1050 | Donets | 4%
|
| 1420 | Belaya | 3%
|
| 1130 | Desna | 3%
|
| 1370 | Vyatka | 2%
|
| 1130 | Vychegda | 2%
|
| 1010 | Khoper | 0%
|