Longest Rivers

1. Nile, Africa, 6,670

2. Amazon, S. America, 6,570

3. Mississippi-Missouri, US, 6,210

4. Yangtze, China, 5,520

5. Ob-Irtysh, Russia, 5,410

6. Rio La Plata, S. America, 4,700 (incl. Paraná)

7. Hwang Ho, China, 4,670

8. Congo, Africa, 4,670

9. Mekong, Asia, 4,500

10. Amur, Asia, 4,350

11. Lena, Russia, 4,290

12. Mackenzie, Canada, 4,240

13. Niger, Africa, 4,170

14. Yenisei, Russia, 4,190

Numbers in different lexica differ greatly. So sometimes the lengths of confluents are counted to a river and sometimes not, for example. Numbers for Hwang Ho e.g. go from 4,672 to 5,464 km. Numbers written here are only up to 10 km exact in order to not pretend a great accuracy.