| Tulcea to Noventa Vicentina | 838.51 mi (1,349.45 km) |
| Tulcea to Novi di Modena | 872.29 mi (1,403.82 km) |
| Tulcea to Novi Ligure | 976.21 mi (1,571.06 km) |
| Tulcea to Nuoro | 1,040.35 mi (1,674.29 km) |
| Tulcea to Occhiobello | 839.04 mi (1,350.30 km) |
| Tulcea to Oderzo | 789.61 mi (1,270.76 km) |
| Tulcea to Oggiono | 940.72 mi (1,513.93 km) |
| Tulcea to Olbia | 1,015.31 mi (1,633.99 km) |
| Tulcea to Oleggio | 976.28 mi (1,571.18 km) |
| Tulcea to Olgiate Comasco | 959.12 mi (1,543.56 km) |
| Tulcea to Olgiate Olona | 964.04 mi (1,551.47 km) |
| Tulcea to Omegna | 985.46 mi (1,585.94 km) |
| Tulcea to Opera | 949.71 mi (1,528.41 km) |
| Tulcea to Oppeano | 855.32 mi (1,376.51 km) |
| Tulcea to Orbassano | 1,034.12 mi (1,664.25 km) |
