Calore
The Calore at Benevento
Map of the Calore River and its three main tributaries
Location
Country	Italy
Physical characteristics
Source
• location	Monte Cervialto, Monti Picentini
• elevation	1,809 m (5,935 ft)
Mouth	Volturno
• coordinates	41°11′06″N 14°27′46″E / 41.18500°N 14.46278°E / 41.18500; 14.46278
Length	108 km (67 mi)
Basin size	3,085 square kilometres (1,191 sq mi)
Discharge
• average	31.8 m3/s (1,120 cu ft/s)
Basin features
Progression	Volturno→ Tyrrhenian Sea
Tributaries
• left	Sabato
• right	Ufita, Tammaro

The Calore Irpino or Calore Beneventano or Calore river is a river in southwestern Italy. It rises from Colle Finestra (1,060 metres (3,480 ft) above sea level), a mountain saddle between Monte Acellica and the Terminio sub-group in the Monti Picentini, sub-range of the Apennine Mountains. The river flows first in the province of Avellino, and then in that of Benevento, before flowing into the Volturno. In ancient times it was known as Calor.

Overview

On 8 May 663, a large detachment of the army of the Eastern Emperor Constans II, which had invaded the Lombard Duchy of Benevento, was defeated here in battle by the army of King Grimoald, under the joined command of Mitola, Count of Capua, and Grimoald's son, Romuald.

Having already abandoned the siege of Benevento and every small conquest done in Italy, Constans, falling back to Naples, lost any hope to push back the Lombards and re-establish Byzantine sovereignty over southern Italy.

Sources

• Iamalio, Antonio (1918). la Regina del Sannio. Naples: P. Federico & G. Ardia.