The Rhine is one of the longest and most important rivers in Europe, at 1,320 km (820 mi), with an average discharge of more
than 2,000 m/s (71,000 cu ft/s). The name of the Rhine derives from Gaulish Renos, and ultimately from the Proto-Indo-European
root *reie- ("to move, flow, run"), which is also the root of words like river and run. The Reno River in Italy shares the
same etymology. The spelling with -h- seems to be borrowed from the Greek form of the name, Rhenos.