San Benedetto del Tronto is a city and comune in Marche, Italy. Part of an urban area with 100,000 inhabitants, it is one of the most densely populated areas along the Adriatic Sea coast. It is the most populated city in Province of Ascoli Piceno, with 47,034. Its port is one of the biggest on the Adriatic; it is the most important centre of Riviera of the Palms, with over 8,000 Phoenix canariensis, Washingtonia and P. sylvestris plants.