| Bad Neuenahr-Ahrweiler to Novi di Modena | 428.18 mi (689.09 km) |
| Bad Neuenahr-Ahrweiler to Novi Ligure | 407.22 mi (655.35 km) |
| Bad Neuenahr-Ahrweiler to Nuoro | 714.75 mi (1,150.28 km) |
| Bad Neuenahr-Ahrweiler to Occhiobello | 440.32 mi (708.63 km) |
| Bad Neuenahr-Ahrweiler to Oderzo | 411.84 mi (662.80 km) |
| Bad Neuenahr-Ahrweiler to Oggiono | 344.71 mi (554.75 km) |
| Bad Neuenahr-Ahrweiler to Olbia | 675.02 mi (1,086.34 km) |
| Bad Neuenahr-Ahrweiler to Oleggio | 348.76 mi (561.27 km) |
| Bad Neuenahr-Ahrweiler to Olgiate Comasco | 339.86 mi (546.95 km) |
| Bad Neuenahr-Ahrweiler to Olgiate Olona | 349.01 mi (561.68 km) |
| Bad Neuenahr-Ahrweiler to Omegna | 327.87 mi (527.66 km) |
| Bad Neuenahr-Ahrweiler to Opera | 369.62 mi (594.84 km) |
| Bad Neuenahr-Ahrweiler to Oppeano | 408.29 mi (657.08 km) |
| Bad Neuenahr-Ahrweiler to Orbassano | 383.10 mi (616.54 km) |
| Bad Neuenahr-Ahrweiler to Orbetello | 592.76 mi (953.95 km) |
