One of the finest racing circuits in the world, the Mugello Circuit winds through the forested hills about 12 kilometres from San Piero a Sieve. The Italian MotoGP round is held here each June and draws enormous crowds — the campsite areas fill days before the race and the sound of engines carries across the valley. The circuit also hosts Formula 1 test sessions and various other motorsport events throughout the year.
On race weekends the whole Mugello valley transforms: traffic builds from Scarperia to the entrance, campsites and terraces open up along the hillsides, and the atmosphere in the surrounding villages shifts noticeably. On non-race days the circuit sometimes opens for track days and driving experiences; check the published calendar if you are visiting in summer and want to get on the track.
The drive from San Piero a Sieve to the circuit along the SP551 through Scarperia is scenic and worth doing in its own right. Scarperia itself has a handsome central square and is known for its tradition of knife-making — a short detour before or after the circuit is easy to arrange.