| Oraiokastro to Octeville | 1,336.27 mi (2,150.52 km) |
| Oraiokastro to Oignies | 1,168.79 mi (1,880.98 km) |
| Oraiokastro to Oissel | 1,214.01 mi (1,953.76 km) |
| Oraiokastro to Olivet | 1,145.20 mi (1,843.02 km) |
| Oraiokastro to Ollioules | 891.31 mi (1,434.43 km) |
| Oraiokastro to Olonne-sur-Mer | 1,291.86 mi (2,079.06 km) |
| Oraiokastro to Oloron-Sainte-Marie | 1,216.33 mi (1,957.49 km) |
| Oraiokastro to Onet Village | 1,061.45 mi (1,708.23 km) |
| Oraiokastro to Onnaing | 1,142.63 mi (1,838.89 km) |
| Oraiokastro to Orange | 950.67 mi (1,529.95 km) |
| Oraiokastro to Orchies | 1,159.20 mi (1,865.56 km) |
| Oraiokastro to Orleans | 1,145.64 mi (1,843.74 km) |
| Oraiokastro to Orly | 1,144.13 mi (1,841.31 km) |
| Oraiokastro to Ormesson-sur-Marne | 1,139.02 mi (1,833.08 km) |
| Oraiokastro to Orsay | 1,151.74 mi (1,853.54 km) |
