| Mairena del Aljarafe to Octeville | 877.48 mi (1,412.16 km) |
| Mairena del Aljarafe to Oignies | 1,011.74 mi (1,628.24 km) |
| Mairena del Aljarafe to Oissel | 903.33 mi (1,453.76 km) |
| Mairena del Aljarafe to Olivet | 831.77 mi (1,338.60 km) |
| Mairena del Aljarafe to Ollioules | 744.40 mi (1,198.00 km) |
| Mairena del Aljarafe to Olonne-sur-Mer | 672.79 mi (1,082.75 km) |
| Mairena del Aljarafe to Oloron-Sainte-Marie | 496.59 mi (799.18 km) |
| Mairena del Aljarafe to Onet Village | 663.29 mi (1,067.46 km) |
| Mairena del Aljarafe to Onnaing | 1,020.46 mi (1,642.27 km) |
| Mairena del Aljarafe to Orange | 737.34 mi (1,186.63 km) |
| Mairena del Aljarafe to Orchies | 1,017.59 mi (1,637.65 km) |
| Mairena del Aljarafe to Orleans | 834.24 mi (1,342.58 km) |
| Mairena del Aljarafe to Orly | 895.39 mi (1,441.00 km) |
| Mairena del Aljarafe to Ormesson-sur-Marne | 901.33 mi (1,450.56 km) |
| Mairena del Aljarafe to Orsay | 887.84 mi (1,428.85 km) |
