| Country/Countries | Sea into which it flows | Length | Answer | % Correct |
|---|---|---|---|---|
| Brasil / Peru / Colombia | Atlantic Ocean | 6992 Km | Amazon River | 100%
|
| Egypt / Burundi / Tanzania / Kenya /Uganda /Rwanda / Sudan / South Sudan | Mediterranean Sea | 6852 Km | Nile | 98%
|
| Rep. Of Congo / DR Congo /Angol | Atlantic Ocean | 4374 Km | Congo | 92%
|
| Russia | Caspian Sea | 3531 Km | Volga | 92%
|
| Germany / Austria / Slovakia / Hungary/ Croatia / Serbia / Romania / Bulgaria / Moldova / Ukraine | Black Sea | 2858 Km | Danube | 91%
|
| USA | Gulf of Mexico | 3778 Km | Mississippi | 91%
|
| China | Bohai Sea | 5464 Km | Yellow River | 91%
|
| China / Myanmar / Laos / Vietnam / Cambodia / Thailand | South China Sea | 4880 Km | Mekong | 89%
|
| China | East China Sea | 6418 Km | Yangtze | 89%
|
| USA | Mississippi | 3726 Km | Missouri | 87%
|
| USA / Mexico | Gulf of Mexico | 3051 Km | Rio Grande | 87%
|
| Bolivia | Mamoré | 1438 Km | Rio Grande | 87%
|
| India / Bangladesh | Bay of Bengal | 2525 Km | Ganges | 83%
|
| Russia | Laptev Sea | 4400 Km | Lena | 83%
|
| Australia | Indian Ocean | 2575 Km | Murray | 83%
|
| Guinea / Mali / Benin / Niger / Nigeria | Gulf of Guinea | 4184 Km | Niger | 83%
|
| Russia | Kara Sea | 3650 Km | Ob | 83%
|
| Brazil / Argentina / Paraguay | Atlantic Ocean | 4880 Km | Paraná | 83%
|
| Russia / China | Strait of Tartars | 2824 Km | Amur | 81%
|
| Turkey / Syria / Iraq | Shatt al-'Arab | 2760 Km | Euphrates | 81%
|
| Turkey / Syria / Iraq | Shatt al-'Arab | 1950 Km | Tigris | 79%
|
| USA / Mexico | Gulf of California | 2339 Km | Colorado | 75%
|
| USA | Matagorda Bay | 1450 Km | Colorado | 75%
|
| Canada / USA | Bering Sea | 3185 Km | Yukon | 74%
|
| Pakistan / India / China | Indian Ocean | 3180 Km | Indus River | 70%
|
| USA | Mississippi | 1579 Km | Ohio | 68%
|
| China / India / Bangladesh | Bay of Bengal | 2948 Km | Brahmaputra | 66%
|
| China / Kazakhstan / Russia | Ob River | 4248 Km | Irtys | 62%
|
| USA | Mississippi | 2364 Km | Arkansas | 60%
|
| Canada / USA | Pacific Ocean | 1954 Km | Columbia | 60%
|
| Colombia / Venezuela | Atlantic Ocean | 2140 Km | Orinoco | 60%
|
| Canada | Beaufort Sea | 1738 Km | Mackenzie | 58%
|
| Brazil | Atlantic Ocean | 2627 Km | Tocantins | 58%
|
| Russia | Volga | 1500 Km | Oka | 57%
|
| China / Myanmar | Andaman Sea | 2170 Km | Irrawaddy | 55%
|
| Brazil / Argentina / Uruguay | Atlantic Ocean | 1650 Km | Uruguay | 55%
|
| Russia | Sea of Azov | 1870 Km | Don | 53%
|
| Russia / Kazakhstan | Caspian Sea | 2428 Km | Ural | 53%
|
| Angola / Namibia / Botswana | Okavango Delta | 1600 Km | Okavango | 51%
|
| Sudan / Ethiopia | Nile | 1610 Km | Blue Nile | 49%
|
| Senegal / Mauritania / Mali | Atlantic Ocean | 1670 Km | Senegal | 49%
|
| Russia | Volga River | 1805 Km | Kama | 45%
|
| Brazil / Bolivia | Amazon River | 3239 Km | Madeira | 45%
|
| Afghanistan / Turkmenistan / Tajikistan /Uzbekistan | Aral Lake | 2650 Km | Amu Darya | 43%
|
| South Africa / Mozambique / Botswana /Zimbabwe | Indian Ocean | 1750 Km | Limpopo | 43%
|
| Australia | Murray River | 1472 Km | Darling | 40%
|
| Russia | Kara Sea | 3487 Km | Enisej | 40%
|
| Kazakhstan / Uzbekistan / Tajikistan | Little Aral Lake | 2212 Km | Syr Darya | 38%
|
| USA | Columbia River | 1735 Km | Snake | 34%
|
| Burkina Faso / Ghana / Ivory Coast | Gulf of Guinea | 1600 Km | Volta | 34%
|
| Brazil / Bolivia | Madeira River | 1900 Km | Mamoré | 32%
|
| Colombia / Venezuela / Brazil | Amazon River | 2250 Km | Rio Negro | 32%
|
| China / Myanmar / Thailand | Andaman Sea | 2815 Km | Salween | 32%
|
| Brazil | Atlantic Ocean | 2863 Km | São Francisco | 28%
|
| Peru / Brazil | Amazon River | 3211 Km | Purus | 26%
|
| Colombia | Caribbean Sea | 1550 Km | Magdalena | 23%
|
| Brazil | Tocantins River | 2627 Km | Araguaia | 19%
|
| Angola / DR Congo | Congo | 2153 Km | Kasai | 19%
|
| Canada | Lake Athabasca | 1923 Km | Peace | 19%
|
| Brazil | Amazon River | 2260 Km | Xingu | 19%
|
| Zambia / Angola / Namibia / Botswana /Zimbabwe / Mozambique | Indian Ocean | 2574 Km | Zambesi | 19%
|
| Russia | East Siberian Sea | 2129 Km | Kolyma | 17%
|
| Russia | Enisej River | 1779 Km | Angara | 15%
|
| Russia | Enisej | 2989 Km | Lower Tunguska | 15%
|
| Argentina / Bolivia / Paraguay | Paraguay River | 2426 Km | Pilcomayo | 15%
|
| Russia | East Siberian Sea | 1726 Km | Indigirka | 13%
|
| China | South China Sea | 2200 Km | Pearl River | 13%
|
| USA | Mississippi | 2189 Km | Red River | 13%
|
| Russia / Belarus / Ukraine | Black Sea | 2285 Km | Dnepr | 11%
|
| India | Bay of Bengal | 1465 Km | Godavari | 11%
|
| Lesotho / South Africa / Namibia | Atlantic Ocean | 2200 Km | Orange River | 11%
|
| China | Amur River | 1927 Km | Songhua | 9%
|
| Russia | Lena River | 2273 Km | Aldan | 8%
|
| Ukraine / Moldova | Black Sea | 1411 Km | Dnestr | 8%
|
| Argentina / Brazil / Bolivia / Paraguay | Paraná River | 2625 Km | Paraguay River | 8%
|
| China | Lop Nur | 2030 Km | Tarim | 8%
|
| Brazil / Peru | Amazon River | 2410 Km | Jurua | 6%
|
| USA | Rio Grande | 1490 Km | Pecos | 6%
|
| Peru | Amazon River | 1415 Km | Marañón | 4%
|
| Colombia / Ecuador / Peru / Brazil | Amazon River | 1575 Km | Putumayo | 4%
|
| DR Congo | Ubangi River | 1210 Km | Uele | 4%
|
| Russia | Kama River | 1430 Km | Belaja | 2%
|
| Australia | Lake Eyre | 1300 Km | Cooper Creek | 2%
|
| Brazil | Mamoré River | 1530 Km | Guaporé | 2%
|
| China | Yangtze | 1530 Km | Han | 2%
|
| DR Congo | Congo | 1500 Km | Lomami | 2%
|
| Russia | Lena River | 2650 Km | Viljuj | 2%
|
| China | Pearl River | 1930 Km | Xi Jiang | 2%
|
| Russia / China | Amur River | 1620 Km | Argun | 0%
|
| Colombia / Brazil | Amazon River | 2280 Km | Caquetá | 0%
|
| Canada | Hudson Bay | 1609 Km | Churchill River | 0%
|
| Kazakhstan / Russia | Irtys River | 2450 Km | Isim | 0%
|
| Canada | Saskatchewan River | 1380 Km | North Saskatchewan | 0%
|
| Russia | Laptev Sea | 2270 Km | Olenëk | 0%
|
| Russia | Barents Sea | 1809 Km | Pečora | 0%
|
| Argentina | Paraná River | 2150 Km | Salado del Norte | 0%
|
| Canada | Saskatchewan River | 1392 Km | South Saskatchewan | 0%
|
| Russia / Kazakhstan | Irtys River | 1591 Km | Tobol | 0%
|
| Ethiopia / Somalia | Shab Juba | 2050 Km | Uebi Scebeli | 0%
|
| Russia | Lena River | 1978 Km | Vitim | 0%
|