Amazon River > Mississippi River: Length Comparison
The Amazon River is longer.
| River | Length |
|---|
| Amazon | ~6,400 km (4,000 mi) |
| Mississippi | ~3,734 km (2,320 mi) |
Notes
- Amazon length debated (source definition: Apurímac vs. Mantaro); some measures exceed 6,900 km.
- Mississippi measured from Lake Itasca to Gulf of Mexico; Missouri-Mississippi system ~6,275 km.
- By discharge, Amazon (~209,000 m³/s) dwarfs Mississippi (~16,800 m³/s).
Either way, Amazon is the longer single-named river; Mississippi-Missouri system rivals it.
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