THE RIVER CHALLENGE
10 Longest Rivers in Order
From the Nile to the Amazon, rank ten rivers from longest to shortest. Named river systems count together, using the World Factbook's published lengths.
- 1Ob-Irtysh
- 2Yangtze
- 3Amur
- 4Nile
+4 more - 5Congo
- 6Mississippi-Missouri
- 7Lena
- 8Yenisey-Angara
- 9Amazon
- 10Yellow River (Huang He)
River length data and source
Uses the archived CIA World Factbook World entry's top ten longest rivers, checked 14 September 2026. Lengths are approximate kilometres. Named combinations such as Mississippi-Missouri are measured as a river system, not just one named section.
River lengths depend on the chosen headwater, mouth and measurement method. This dataset places the Nile first and Amazon second; alternative measurements can reverse them. The game uses one consistent published list, not a claim that every length is undisputed.
Flags indicate locations along the main river or named headwater system, including border reaches, not every country in its drainage basin. Their order is a geographic cue, not a measured ranking of national shares.
The CIA retired the Factbook in February 2026. The original government data are preserved in the CC0-licensed factbook.json archive.