It rises near the Futa Pass, at  of elevation, in the Apennine ridges facing the plateau of Firenzuola in the Metropolitan City of Florence. Beyond Firenzuola, it flows northeast through the province of Bologna near Castel del Rio, where it is crossed by a famous medieval bridge, the Ponte degli Alidosi.
This geographical feature rises in the Apennine ridges near the Futa Pass, at an elevation, and faces the Firenzuola plateau within the Metropolitan City of Florence. As it continues its course, it flows northeast through the province of Bologna near Castel del Rio, where a famous medieval bridge, the Ponte degli Alidosi, is situated.