| Length (Kilometers) | River | % Correct |
|---|---|---|
| 3,692 | Volga River | 96%
|
| 2,860 | Danube River | 94%
|
| 2,290 | Dnieper River | 60%
|
| 1,950 | Don River | 56%
|
| 2,428 | Ural River | 47%
|
| 1,805 | Kama River | 18%
|
| 1,809 | Pechora River | 13%
|
| 1,500 | Oka River | 12%
|
| 1,430 | Belaya River | 4%
|
| 1,774 | Northern Dvina-Vychekda River | 0%
|