The SO.F.T. - Sorgenti di Firenze Trekking (SO.F.T. - Sources of Florence Walking) in Tuscany is a system of hiking that develops around a ring main and twenty-two secondary to it. Indeed the valley of the Mugello you can walk for days along the Apennines Florentine, to draw a large ring. In the course of the first ring walkers can be housed in "places step" that public shelters in villas or farmhouses in the former country schools in monasteries, camping or travel companies. The stopping place is almost always in small villages or in places attractive, accessible by car. The twenty-two secondary routes offer the possibility of a day, each highlighting a particular theme of environmental, historical and artistic.