| Osterwieck to Novi di Modena | 488.79 mi (786.63 km) |
| Osterwieck to Novi Ligure | 505.77 mi (813.96 km) |
| Osterwieck to Nuoro | 807.62 mi (1,299.73 km) |
| Osterwieck to Occhiobello | 488.37 mi (785.95 km) |
| Osterwieck to Oderzo | 434.92 mi (699.94 km) |
| Osterwieck to Oggiono | 431.70 mi (694.76 km) |
| Osterwieck to Olbia | 765.65 mi (1,232.19 km) |
| Osterwieck to Oleggio | 449.95 mi (724.13 km) |
| Osterwieck to Olgiate Comasco | 434.53 mi (699.32 km) |
| Osterwieck to Olgiate Olona | 445.44 mi (716.87 km) |
| Osterwieck to Omegna | 433.49 mi (697.64 km) |
| Osterwieck to Opera | 459.96 mi (740.24 km) |
| Osterwieck to Oppeano | 461.11 mi (742.09 km) |
| Osterwieck to Orbassano | 502.28 mi (808.35 km) |
| Osterwieck to Orbetello | 658.68 mi (1,060.04 km) |
