| Upper Grand Lagoon to Noventa Vicentina | 5,094.55 mi (8,198.88 km) |
| Upper Grand Lagoon to Novi di Modena | 5,079.00 mi (8,173.87 km) |
| Upper Grand Lagoon to Novi Ligure | 4,989.70 mi (8,030.15 km) |
| Upper Grand Lagoon to Nuoro | 5,149.02 mi (8,286.55 km) |
| Upper Grand Lagoon to Occhiobello | 5,107.89 mi (8,220.35 km) |
| Upper Grand Lagoon to Oderzo | 5,120.38 mi (8,240.45 km) |
| Upper Grand Lagoon to Oggiono | 4,984.42 mi (8,021.65 km) |
| Upper Grand Lagoon to Olbia | 5,138.24 mi (8,269.20 km) |
| Upper Grand Lagoon to Oleggio | 4,958.43 mi (7,979.83 km) |
| Upper Grand Lagoon to Olgiate Comasco | 4,967.70 mi (7,994.73 km) |
| Upper Grand Lagoon to Olgiate Olona | 4,968.42 mi (7,995.90 km) |
| Upper Grand Lagoon to Omegna | 4,940.48 mi (7,950.94 km) |
| Upper Grand Lagoon to Opera | 4,990.37 mi (8,031.23 km) |
| Upper Grand Lagoon to Oppeano | 5,078.82 mi (8,173.57 km) |
| Upper Grand Lagoon to Orbassano | 4,927.01 mi (7,929.25 km) |
