| Rang | Länge | Fluss | % Korrekt |
|---|---|---|---|
| 2. | 6'400 km | Amazonas | 100%
|
| 1. | 6'650 km | Nil | 96%
|
| 13. | 4'184 km | Niger | 83%
|
| 9. | 4'835 km | Kongo | 78%
|
| 4. | 6'051 km | Mississippi | 78%
|
| 17. | 3'530 km | Wolga | 78%
|
| 10. | 4'692 km | Lena | 74%
|
| 3. | 6'380 km | Jangtsekiang | 65%
|
| 6. | 5'410 km | Ob | 65%
|
| 11. | 4'500 km | Mekong | 61%
|
| 7. | 5'052 km | Amur | 52%
|
| 8. | 4'845 km | Huáng Hé | 48%
|
| 14. | 3'998 km | Paraná | 48%
|
| 5. | 5'540 km | Jenissei | 39%
|
| 12. | 4'260 km | Mackenzie | 35%
|
| 16. | 3'596 km | Schatt al-Arab | 30%
|
| 15. | 3'672 km | Murray River | 22%
|
| 19. | 3'199 km | Rio São Francisco | 22%
|
| 20. | 3'185 km | Yukon River | 22%
|
| 18. | 3'450 km | Meghna | 13%
|