GeotchaA geography quiz on a real globe

25 longest rivers in the United States

25 rivers, each one drawn on a satellite globe. Name it when it lights up, find it when you are given its name, or type every one you can remember in Name all.

Free to play, with no account needed. What you miss comes back for review until it sticks.

The rivers

  1. 1Mississippi3,766 km
  2. 2Missouri3,726 km
  3. 3Yukon3,190 km
  4. 4Rio Grande3,051 km
  5. 5Arkansas2,364 km
  6. 6Colorado2,334 km
  7. 7Red River (United States)2,189 km
  8. 8Columbia2,000 km
  9. 9Snake River1,735 km
  10. 10Ohio1,579 km
  11. 11Pecos1,560 km
  12. 12Canadian1,458 km
  13. 13Colorado (Texas)1,387 km
  14. 14Brazos1,352 km
  15. 15Souris1,240 km
  16. 16St. Lawrence1,197 km
  17. 17Green River1,175 km
  18. 18Milk River1,173 km
  19. 19White River1,162 km
  20. 20North Platte River1,152 km
  21. 21James (Dakotas)1,143 km
  22. 22Trinity1,140 km
  23. 23Kuskokwim1,130 km
  24. 24Cimarron1,123 km
  25. 25Yellowstone1,114 km

Length in km as Wikidata records it (P2043, the best-ranked figure). Each named river counts on its own: the river that carries the name, from its source to its mouth. Headstreams and tributaries with names of their own are rivers of their own, so the Missouri and the Mississippi are two rivers here, as are the Irtysh and the Ob (the Longest River Systems set measures such chains as one system, from the most distant source). A named section of a river is that river: the Solimões, as the Amazon’s upper course is called in Brazil, is the Amazon. Where the recorded length runs from a differently named headwater (the Congo’s from the Lualaba’s source), the course is drawn on up that headwater. Rivers under 200 km are in only when they are well known (30 or more Wikipedia editions), and a river whose mapped course covers under half its recorded length is left out.

On the map

Map of 25 longest rivers in the United States, 25 rivers: each one marked on the globe

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