| Serpa to Noventa Vicentina | 1,106.94 mi (1,781.45 km) |
| Serpa to Novi di Modena | 1,068.65 mi (1,719.82 km) |
| Serpa to Novi Ligure | 968.95 mi (1,559.37 km) |
| Serpa to Nuoro | 920.69 mi (1,481.71 km) |
| Serpa to Occhiobello | 1,100.63 mi (1,771.30 km) |
| Serpa to Oderzo | 1,162.50 mi (1,870.87 km) |
| Serpa to Oggiono | 1,023.42 mi (1,647.04 km) |
| Serpa to Olbia | 933.70 mi (1,502.64 km) |
| Serpa to Oleggio | 986.80 mi (1,588.10 km) |
| Serpa to Olgiate Comasco | 1,006.87 mi (1,620.39 km) |
| Serpa to Olgiate Olona | 998.64 mi (1,607.16 km) |
| Serpa to Omegna | 985.95 mi (1,586.73 km) |
| Serpa to Opera | 1,005.75 mi (1,618.60 km) |
| Serpa to Oppeano | 1,091.45 mi (1,756.52 km) |
| Serpa to Orbassano | 920.80 mi (1,481.89 km) |
