Monte San Petrone is a mountain in the department of Haute-Corse on the island of Corsica, France.

The Monte San Petrone is the highest peak in the Castagniccia region, named after the abundant sweet chestnut trees in the northeast of Corsica.

[2] The peak marks the meeting point of the boundaries of the cantons of Saliceto to the northwest, Nocario to the northeast, Campana to the southeast and San-Lorenzo to the southwest.

[4][a] Monte Cinto, the highest mountain on Corsica, is 19.5 miles (31.4 km) to the west.

The trail from Col de Prato on the D71 road mainly runs through beach and pine woods, which provide shade from the summer heat.