| Oldenburg in Holstein to Novi di Modena | 649.93 mi (1,045.97 km) |
| Oldenburg in Holstein to Novi Ligure | 665.80 mi (1,071.51 km) |
| Oldenburg in Holstein to Nuoro | 968.82 mi (1,559.16 km) |
| Oldenburg in Holstein to Occhiobello | 648.73 mi (1,044.03 km) |
| Oldenburg in Holstein to Oderzo | 592.89 mi (954.17 km) |
| Oldenburg in Holstein to Oggiono | 592.33 mi (953.26 km) |
| Oldenburg in Holstein to Olbia | 926.89 mi (1,491.69 km) |
| Oldenburg in Holstein to Oleggio | 609.29 mi (980.56 km) |
| Oldenburg in Holstein to Olgiate Comasco | 594.50 mi (956.76 km) |
| Oldenburg in Holstein to Olgiate Olona | 605.31 mi (974.15 km) |
| Oldenburg in Holstein to Omegna | 592.06 mi (952.83 km) |
| Oldenburg in Holstein to Opera | 620.50 mi (998.59 km) |
| Oldenburg in Holstein to Oppeano | 621.98 mi (1,000.98 km) |
| Oldenburg in Holstein to Orbassano | 659.09 mi (1,060.70 km) |
| Oldenburg in Holstein to Orbetello | 819.62 mi (1,319.06 km) |
