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Rivers of the World Quiz

52 major rivers, identified from their length, continent and where they end. Every one has a page with the countries it runs through.

About the river quiz

This quiz covers 52 rivers, from the Nile and the Amazon down to the Thames. Each question gives you the length, the continent and the sea or ocean the river ends in, and asks which river that describes.

Wrong answers are drawn from rivers of a similar length rather than at random, so guessing by size alone does not work. Lengths are the commonly-cited figures — they vary by a few per cent between sources depending on where a source stream is taken to begin.

All 52 rivers, longest first

Every river in the quiz, with its length, continent, outflow and drainage basin.
River Length Continent Flows into Basin
Nile 6,650 km Africa Mediterranean Sea 3,254,555 km²
Amazon 6,400 km South America Atlantic Ocean 7,000,000 km²
Yangtze 6,300 km Asia East China Sea 1,800,000 km²
Yenisei 5,539 km Asia Kara Sea 2,580,000 km²
Yellow River 5,464 km Asia Bohai Sea 752,000 km²
Paraná 4,880 km South America Río de la Plata 2,582,672 km²
Congo 4,700 km Africa Atlantic Ocean 4,014,500 km²
Lena 4,400 km Asia Laptev Sea 2,490,000 km²
Mekong 4,350 km Asia South China Sea 795,000 km²
Niger 4,200 km Africa Gulf of Guinea 2,117,700 km²
Brahmaputra 3,848 km Asia Bay of Bengal 651,334 km²
Mississippi 3,766 km North America Gulf of Mexico 2,980,000 km²
Ob 3,650 km Asia Gulf of Ob 2,990,000 km²
Volga 3,531 km Europe Caspian Sea 1,360,000 km²
Yukon 3,190 km North America Bering Sea 850,000 km²
Indus 3,180 km Asia Arabian Sea 1,165,000 km²
Rio Grande 3,051 km North America Gulf of Mexico 607,965 km²
São Francisco 2,914 km South America Atlantic Ocean 630,000 km²
Danube 2,860 km Europe Black Sea 817,000 km²
Amur 2,824 km Asia Sea of Okhotsk 1,855,000 km²
Euphrates 2,800 km Asia Shatt al-Arab 500,000 km²
Amu Darya 2,620 km Asia Aral Sea 534,739 km²
Zambezi 2,574 km Africa Indian Ocean 1,390,000 km²
Paraguay 2,549 km South America Paraná 1,168,540 km²
Ganges 2,525 km Asia Bay of Bengal 1,080,000 km²
Kolyma 2,513 km Asia East Siberian Sea 644,000 km²
Murray 2,508 km Oceania Southern Ocean 1,061,469 km²
Orange 2,432 km Africa Atlantic Ocean 973,000 km²
Ural 2,428 km Europe Caspian Sea 231,000 km²
Arkansas 2,364 km North America Mississippi 435,122 km²
Colorado 2,330 km North America Gulf of California 640,000 km²
Syr Darya 2,212 km Asia Aral Sea 782,617 km²
Dnieper 2,201 km Europe Black Sea 516,300 km²
Irrawaddy 2,170 km Asia Andaman Sea 411,000 km²
Orinoco 2,140 km South America Atlantic Ocean 880,000 km²
Columbia 2,000 km North America Pacific Ocean 668,217 km²
Tigris 1,950 km Asia Shatt al-Arab 375,000 km²
Don 1,870 km Europe Sea of Azov 425,600 km²
Senegal 1,790 km Africa Atlantic Ocean 337,000 km²
Limpopo 1,750 km Africa Indian Ocean 415,000 km²
Mackenzie 1,738 km North America Beaufort Sea 1,805,200 km²
Darling 1,472 km Oceania Murray 650,000 km²
Rhine 1,230 km Europe North Sea 185,000 km²
Elbe 1,094 km Europe North Sea 148,268 km²
Vistula 1,047 km Europe Baltic Sea 194,424 km²
Tagus 1,038 km Europe Atlantic Ocean 80,100 km²
Loire 1,006 km Europe Bay of Biscay 117,054 km²
Oder 854 km Europe Baltic Sea 118,861 km²
Seine 777 km Europe English Channel 78,650 km²
Po 652 km Europe Adriatic Sea 74,000 km²
Thames 346 km Europe North Sea 12,935 km²
Jordan 251 km Asia Dead Sea 18,300 km²

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Frequently asked questions

Why do river lengths differ between sources?

A river has no single agreed starting point. Measurements differ over which headstream counts as the source, whether a delta channel is included, and how tightly meanders are traced. Figures here are the commonly-cited ones and can vary by a few per cent elsewhere.

Is the Nile or the Amazon the longest river?

Most sources still give the Nile, at about 6,650 km against roughly 6,400 km for the Amazon, but surveys that take a different Peruvian headstream as the Amazon's source put it ahead. The Amazon is far larger by discharge either way.