You’ll Ace This United States Geography Quiz If You’ve Visited All 50 States

Guides 4/3/24

The United States has many rivers. Which is the longest?

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Confluence of Missouri and Mississippi rivers near St. Louis Mo. and Alton, Illinois view from Drone
Retry Correct Incorrect With a length of 2,341 miles, The Missouri River is the longest river in the United States, with The Mississippi River coming in second with a length of 2,340 miles.
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Joe Sohm/Visions of America/Universal Images Group via Getty Images
Joe Sohm/Visions of America/Universal Images Group via Getty Images

The United States has many rivers. Which is the longest?

  • The Missouri River
  • The Red River
  • The Colorado River
  • The Mississippi River
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