| San Salvo to Octeville | 943.26 mi (1,518.04 km) |
| San Salvo to Oignies | 806.34 mi (1,297.68 km) |
| San Salvo to Oissel | 827.05 mi (1,331.01 km) |
| San Salvo to Olivet | 743.66 mi (1,196.80 km) |
| San Salvo to Ollioules | 457.97 mi (737.03 km) |
| San Salvo to Olonne-sur-Mer | 871.19 mi (1,402.05 km) |
| San Salvo to Oloron-Sainte-Marie | 782.76 mi (1,259.73 km) |
| San Salvo to Onet Village | 631.29 mi (1,015.97 km) |
| San Salvo to Onnaing | 782.90 mi (1,259.96 km) |
| San Salvo to Orange | 520.70 mi (837.99 km) |
| San Salvo to Orchies | 798.41 mi (1,284.92 km) |
| San Salvo to Orleans | 744.57 mi (1,198.27 km) |
| San Salvo to Orly | 755.13 mi (1,215.26 km) |
| San Salvo to Ormesson-sur-Marne | 751.19 mi (1,208.93 km) |
| San Salvo to Orsay | 761.28 mi (1,225.16 km) |
