| Rheinberg to Novi di Modena | 500.29 mi (805.15 km) |
| Rheinberg to Novi Ligure | 479.60 mi (771.85 km) |
| Rheinberg to Nuoro | 786.80 mi (1,266.24 km) |
| Rheinberg to Occhiobello | 511.64 mi (823.41 km) |
| Rheinberg to Oderzo | 480.29 mi (772.95 km) |
| Rheinberg to Oggiono | 417.43 mi (671.79 km) |
| Rheinberg to Olbia | 747.26 mi (1,202.60 km) |
| Rheinberg to Oleggio | 421.21 mi (677.87 km) |
| Rheinberg to Olgiate Comasco | 412.53 mi (663.91 km) |
| Rheinberg to Olgiate Olona | 421.63 mi (678.54 km) |
| Rheinberg to Omegna | 400.19 mi (644.05 km) |
| Rheinberg to Opera | 442.32 mi (711.84 km) |
| Rheinberg to Oppeano | 479.80 mi (772.17 km) |
| Rheinberg to Orbassano | 453.86 mi (730.42 km) |
| Rheinberg to Orbetello | 665.39 mi (1,070.84 km) |
