Is the Amazon or the Nile the Longest Reiver in the World? Depends Who You Ask - Voronoi
Nov 12, 2025
Is the Amazon or the Nile the Longest Reiver in the World? Depends Who You Ask
Key Takeaways
Finding the source of a river—which would determine its total length—is tricky when the Amazon’s is deep in a thick rainforest.
But more importantly, measuring a natural phenomenon accurately depends on the resolution of the underlying data and the number of measurement points.
While there is a consensus on the Nile being the longest, some experts list the Amazon’s length at 4,345 miles (6,992 km), making it 300 miles (342 km) longer than the Nile.
Nevertheless, this source (Brittanica) ranks the Nile as the longest.
