The Casentino is the valley in which the first tract of the river Arno flows to Subbiano, Italy.

It is one of the four valleys in which the Province of Arezzo is divided. Mount Falterona, from which the Arno starts, represents the northern boundary between the Casentino and Romagna. On the east of the valley are the Alpe di Serra and the Alpe di Catenaia, which separate the Casentino from the highest tract of the Val Tiberina. On the west there is the Pratomagno, which separates the valley from the Valdarno Superiore. Part of the valley is included in the Foreste Casentinesi, Monte Falterona, Campigna National Park.

It can be said that the valley has an oval form, with an extension across the river that varies from a maximum of 60 km to a minimum of 30. The topography of the Casentino is especially various, including both plains and mountains rich in large forests. These mountains have often attracted great saints: it was here that St. Romuald built his hermitages at Camaldoli, and that less than two centuries later St. Francis of Assisi established the Sanctuary of La Verna, the headquarters of the Franciscan order.

Robert Józef Kubica (Polish pronunciation: [ˈrɔbɛrt kuˈbit͡sa] ( listen); born 7 December 1984 in Kraków, Poland) is the first Polish racing driver to compete in Formula One. Between 2006 and 2009 he drove for the BMW Sauber F1 team, promoted from test driver to race driver during 2006. In June 2008, Kubica took his maiden F1 victory in the Canadian Grand Prix, becoming the 99th driver to win a World Championship race.

On 6 February 2011, Kubica was seriously injured in a crash at the Ronde di Andora rally, in which his forearm was partially severed. He was taking part in the rally for personal enjoyment. The Renault driver told Italian newspaper La Gazzetta dello Sport in a bedside interview that he could feel the fingers in his right hand, and is determined to make a swift return to Formula One in 2011. Kubica had to miss the whole 2011 season, and although he is expected to fully recover from his injuries, his future in Formula One racing for the long term remained unclear. In November 2011, Kubica confirmed that he would not be ready for the start of the 2012 season.