Foligno is an ancient town of Italy in the province of Perugia in east central Umbria, on the Topino river where it leaves the Apennines and enters the wide plain of the Clitunno river system. It is located 40 km (25 mi) south-east of Perugia, 10 km (6 mi) north-north-west of Trevi and 6 km (4 mi) south of Spello.