| Alcanena to Octeville | 781.74 mi (1,258.09 km) |
| Alcanena to Oignies | 947.76 mi (1,525.27 km) |
| Alcanena to Oissel | 833.70 mi (1,341.71 km) |
| Alcanena to Olivet | 783.16 mi (1,260.37 km) |
| Alcanena to Ollioules | 793.68 mi (1,277.30 km) |
| Alcanena to Olonne-sur-Mer | 599.42 mi (964.68 km) |
| Alcanena to Oloron-Sainte-Marie | 490.79 mi (789.84 km) |
| Alcanena to Onet Village | 669.74 mi (1,077.85 km) |
| Alcanena to Onnaing | 961.41 mi (1,547.24 km) |
| Alcanena to Orange | 764.25 mi (1,229.94 km) |
| Alcanena to Orchies | 955.34 mi (1,537.47 km) |
| Alcanena to Orleans | 785.29 mi (1,263.80 km) |
| Alcanena to Orly | 842.00 mi (1,355.08 km) |
| Alcanena to Ormesson-sur-Marne | 848.72 mi (1,365.89 km) |
| Alcanena to Orsay | 833.20 mi (1,340.91 km) |
