| Ponte San Pietro to Octeville | 588.11 mi (946.47 km) |
| Ponte San Pietro to Oignies | 448.36 mi (721.56 km) |
| Ponte San Pietro to Oissel | 469.23 mi (755.16 km) |
| Ponte San Pietro to Olivet | 393.09 mi (632.63 km) |
| Ponte San Pietro to Ollioules | 255.55 mi (411.27 km) |
| Ponte San Pietro to Olonne-sur-Mer | 546.72 mi (879.86 km) |
| Ponte San Pietro to Oloron-Sainte-Marie | 531.34 mi (855.11 km) |
| Ponte San Pietro to Onet Village | 353.59 mi (569.05 km) |
| Ponte San Pietro to Onnaing | 425.83 mi (685.31 km) |
| Ponte San Pietro to Orange | 257.37 mi (414.19 km) |
| Ponte San Pietro to Orchies | 440.89 mi (709.55 km) |
| Ponte San Pietro to Orleans | 393.63 mi (633.48 km) |
| Ponte San Pietro to Orly | 397.62 mi (639.91 km) |
| Ponte San Pietro to Ormesson-sur-Marne | 393.30 mi (632.96 km) |
| Ponte San Pietro to Orsay | 404.31 mi (650.68 km) |
