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The Amazon River is the second longest river of the world. The geographic source of the Amazon River in Mt. Nevado Mismi of Peru with elevation of 5,189 meters. From its source to the mouth, the length of the Amazon river is 6,575 km or 4,086 miles.

Source: S. Liu, P. Lu, D. Liu, P. Jin, W. Wang, Pinpointing the sources and measuring the lengths of the principal rivers of the world, International Journal of Digital Earth, Volume 2, Issue 1 March 2009 , pages 80 - 87,DOI: 10.1080/1753894090274608

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