| Hint | Answer | % Correct |
|---|---|---|
| 6,400 km | Amazon | 100%
|
| 6,275 km | Missouri - Mississippi | 94%
|
| 6,650 km | Nile | 94%
|
| 4,700 km | Congo | 82%
|
| 4,200 km | Niger | 76%
|
| 3,058 km | Saint Lawrence | 71%
|
| 3,057 km | Rio Grande | 65%
|
| 4,880 km | Paraná | 59%
|
| 3,180 km | São Francisco | 29%
|
| 3,650 km | Tocantins | 24%
|