| Porto de Mos to Octeville | 776.52 mi (1,249.69 km) |
| Porto de Mos to Oignies | 944.34 mi (1,519.77 km) |
| Porto de Mos to Oissel | 830.10 mi (1,335.91 km) |
| Porto de Mos to Olivet | 781.00 mi (1,256.89 km) |
| Porto de Mos to Ollioules | 797.44 mi (1,283.35 km) |
| Porto de Mos to Olonne-sur-Mer | 596.12 mi (959.36 km) |
| Porto de Mos to Oloron-Sainte-Marie | 492.32 mi (792.31 km) |
| Porto de Mos to Onet Village | 671.29 mi (1,080.34 km) |
| Porto de Mos to Onnaing | 958.29 mi (1,542.22 km) |
| Porto de Mos to Orange | 766.77 mi (1,233.99 km) |
| Porto de Mos to Orchies | 952.03 mi (1,532.14 km) |
| Porto de Mos to Orleans | 783.10 mi (1,260.28 km) |
| Porto de Mos to Orly | 839.43 mi (1,350.93 km) |
| Porto de Mos to Ormesson-sur-Marne | 846.18 mi (1,361.80 km) |
| Porto de Mos to Orsay | 830.56 mi (1,336.66 km) |
