Pescara Circuit
Pescara, Italy
The Pescara Circuit was a 25.801 km (16.032 mi) race course made up entirely of public roads near Pescara, Italy, that hosted the Coppa Acerbo auto race. Pescara is the longest circuit to ever host a Formula One Grand Prix, but was used only once, for the 1957 Pescara Grand Prix, in which Scuderia Ferrari remained absent.
Racecourse data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).