| Alcora to Octeville | 664.28 mi (1,069.06 km) |
| Alcora to Oignies | 735.14 mi (1,183.10 km) |
| Alcora to Oissel | 643.96 mi (1,036.35 km) |
| Alcora to Olivet | 548.71 mi (883.06 km) |
| Alcora to Ollioules | 377.57 mi (607.64 km) |
| Alcora to Olonne-sur-Mer | 453.91 mi (730.49 km) |
| Alcora to Oloron-Sainte-Marie | 217.11 mi (349.40 km) |
| Alcora to Onet Village | 329.58 mi (530.41 km) |
| Alcora to Onnaing | 736.42 mi (1,185.16 km) |
| Alcora to Orange | 380.76 mi (612.78 km) |
| Alcora to Orchies | 738.15 mi (1,187.94 km) |
| Alcora to Orleans | 551.40 mi (887.39 km) |
| Alcora to Orly | 612.94 mi (986.44 km) |
| Alcora to Ormesson-sur-Marne | 617.29 mi (993.42 km) |
| Alcora to Orsay | 607.83 mi (978.21 km) |
