| Ratingen to Novi di Modena | 480.32 mi (773.00 km) |
| Ratingen to Novi Ligure | 460.65 mi (741.34 km) |
| Ratingen to Nuoro | 768.12 mi (1,236.17 km) |
| Ratingen to Occhiobello | 491.54 mi (791.06 km) |
| Ratingen to Oderzo | 460.19 mi (740.60 km) |
| Ratingen to Oggiono | 397.89 mi (640.34 km) |
| Ratingen to Olbia | 728.43 mi (1,172.30 km) |
| Ratingen to Oleggio | 402.19 mi (647.26 km) |
| Ratingen to Olgiate Comasco | 393.23 mi (632.84 km) |
| Ratingen to Olgiate Olona | 402.42 mi (647.63 km) |
| Ratingen to Omegna | 381.29 mi (613.63 km) |
| Ratingen to Opera | 422.95 mi (680.67 km) |
| Ratingen to Oppeano | 459.72 mi (739.85 km) |
| Ratingen to Orbassano | 435.93 mi (701.56 km) |
| Ratingen to Orbetello | 645.66 mi (1,039.09 km) |
