| Oraiokastro to Oerlinghausen | 1,027.94 mi (1,654.31 km) |
| Oraiokastro to Oestrich-Winkel | 963.37 mi (1,550.40 km) |
| Oraiokastro to Offenburg | 907.80 mi (1,460.96 km) |
| Oraiokastro to Oftersheim | 916.81 mi (1,475.47 km) |
| Oraiokastro to Ohrdruf | 909.27 mi (1,463.33 km) |
| Oraiokastro to Ohringen | 876.51 mi (1,410.61 km) |
| Oraiokastro to Olbernhau | 826.09 mi (1,329.47 km) |
| Oraiokastro to Olching | 768.74 mi (1,237.17 km) |
| Oraiokastro to Oldenburg | 1,098.46 mi (1,767.80 km) |
| Oraiokastro to Oldenburg in Holstein | 1,089.30 mi (1,753.06 km) |
| Oraiokastro to Olfen | 1,057.47 mi (1,701.83 km) |
| Oraiokastro to Olpe | 1,011.83 mi (1,628.38 km) |
| Oraiokastro to Olsberg | 1,005.06 mi (1,617.49 km) |
| Oraiokastro to Oranienburg | 946.71 mi (1,523.57 km) |
| Oraiokastro to Ortenberg | 941.52 mi (1,515.22 km) |
