| Santa Iria da Azoia to Octeville | 830.07 mi (1,335.86 km) |
| Santa Iria da Azoia to Oignies | 996.03 mi (1,602.95 km) |
| Santa Iria da Azoia to Oissel | 882.03 mi (1,419.49 km) |
| Santa Iria da Azoia to Olivet | 830.78 mi (1,337.02 km) |
| Santa Iria da Azoia to Ollioules | 832.00 mi (1,338.97 km) |
| Santa Iria da Azoia to Olonne-sur-Mer | 647.67 mi (1,042.33 km) |
| Santa Iria da Azoia to Oloron-Sainte-Marie | 534.10 mi (859.55 km) |
| Santa Iria da Azoia to Onet Village | 712.84 mi (1,147.21 km) |
| Santa Iria da Azoia to Onnaing | 1,009.57 mi (1,624.74 km) |
| Santa Iria da Azoia to Orange | 805.41 mi (1,296.18 km) |
| Santa Iria da Azoia to Orchies | 1,003.58 mi (1,615.10 km) |
| Santa Iria da Azoia to Orleans | 832.93 mi (1,340.48 km) |
| Santa Iria da Azoia to Orly | 889.89 mi (1,432.15 km) |
| Santa Iria da Azoia to Ormesson-sur-Marne | 896.59 mi (1,442.92 km) |
| Santa Iria da Azoia to Orsay | 881.13 mi (1,418.04 km) |
