| Monte San Pietro to Octeville | 700.89 mi (1,127.97 km) |
| Monte San Pietro to Oignies | 564.51 mi (908.49 km) |
| Monte San Pietro to Oissel | 583.65 mi (939.30 km) |
| Monte San Pietro to Olivet | 502.92 mi (809.37 km) |
| Monte San Pietro to Ollioules | 281.96 mi (453.77 km) |
| Monte San Pietro to Olonne-sur-Mer | 643.63 mi (1,035.82 km) |
| Monte San Pietro to Oloron-Sainte-Marie | 594.38 mi (956.56 km) |
| Monte San Pietro to Onet Village | 424.57 mi (683.29 km) |
| Monte San Pietro to Onnaing | 541.77 mi (871.89 km) |
| Monte San Pietro to Orange | 316.65 mi (509.60 km) |
| Monte San Pietro to Orchies | 556.94 mi (896.31 km) |
| Monte San Pietro to Orleans | 503.67 mi (810.58 km) |
| Monte San Pietro to Orly | 511.79 mi (823.65 km) |
| Monte San Pietro to Ormesson-sur-Marne | 507.75 mi (817.15 km) |
| Monte San Pietro to Orsay | 518.11 mi (833.82 km) |
