| Potenza Picena to Octeville | 842.60 mi (1,356.04 km) |
| Potenza Picena to Oignies | 700.25 mi (1,126.95 km) |
| Potenza Picena to Oissel | 724.63 mi (1,166.17 km) |
| Potenza Picena to Olivet | 644.91 mi (1,037.89 km) |
| Potenza Picena to Ollioules | 391.17 mi (629.53 km) |
| Potenza Picena to Olonne-sur-Mer | 782.27 mi (1,258.95 km) |
| Potenza Picena to Oloron-Sainte-Marie | 714.68 mi (1,150.16 km) |
| Potenza Picena to Onet Village | 552.99 mi (889.95 km) |
| Potenza Picena to Onnaing | 676.52 mi (1,088.76 km) |
| Potenza Picena to Orange | 442.55 mi (712.21 km) |
| Potenza Picena to Orchies | 692.16 mi (1,113.92 km) |
| Potenza Picena to Orleans | 645.67 mi (1,039.10 km) |
| Potenza Picena to Orly | 652.90 mi (1,050.74 km) |
| Potenza Picena to Ormesson-sur-Marne | 648.69 mi (1,043.96 km) |
| Potenza Picena to Orsay | 659.41 mi (1,061.22 km) |
