Rapido (river)

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Physical characteristics
 • locationMonti delle Mainarde
 • elevationc. 2,000 m (6,600 ft)
 • location
near Cassino (FR)
 • coordinates
41°28′16″N 13°50′14″E / 41.4710°N 13.8372°E / 41.4710; 13.8372Coordinates: 41°28′16″N 13°50′14″E / 41.4710°N 13.8372°E / 41.4710; 13.8372
Lengthc. 40 km (25 mi)
 • average25 m3/s (880 cu ft/s)
Basin features
ProgressionGariGariglianoTyrrhenian Sea

The Rapido is a short river (c. 40 kilometres (25 mi)) which flows in the Italian province of Frosinone. The river is known for the Battle of the Rapido River, despite it actually occurring on the Gari River.[1]

Its source is close to the border between Lazio and Molise on the slopes of the Mainarde mountains. The river bathes the commune of Sant'Elia Fiumerapido after which it becomes known as the Gari.

Fed by numerous karstic springs, the river has a relatively high and reliable discharge: 25 m³/s on average and never dropping below 10 m³/s.


  1. ^ 1944: la battaglia di S.Angelo in Theodice e la confusione tra i fiumi Rapido e Gari, 1944: the Battle of St. Angelo in Theodice and the Confusion between Rapido and Gari rivers.