| Ancona to Octeville | 828.43 mi (1,333.22 km) |
| Ancona to Oignies | 684.08 mi (1,100.92 km) |
| Ancona to Oissel | 709.92 mi (1,142.50 km) |
| Ancona to Olivet | 631.44 mi (1,016.20 km) |
| Ancona to Ollioules | 386.44 mi (621.92 km) |
| Ancona to Olonne-sur-Mer | 771.39 mi (1,241.43 km) |
| Ancona to Oloron-Sainte-Marie | 708.70 mi (1,140.54 km) |
| Ancona to Onet Village | 545.02 mi (877.13 km) |
| Ancona to Onnaing | 660.20 mi (1,062.48 km) |
| Ancona to Orange | 434.93 mi (699.95 km) |
| Ancona to Orchies | 675.90 mi (1,087.75 km) |
| Ancona to Orleans | 632.14 mi (1,017.34 km) |
| Ancona to Orly | 638.29 mi (1,027.23 km) |
| Ancona to Ormesson-sur-Marne | 633.98 mi (1,020.30 km) |
| Ancona to Orsay | 644.92 mi (1,037.91 km) |
