| Mairena del Alcor to Octeville | 871.20 mi (1,402.07 km) |
| Mairena del Alcor to Oignies | 1,002.45 mi (1,613.29 km) |
| Mairena del Alcor to Oissel | 894.72 mi (1,439.91 km) |
| Mairena del Alcor to Olivet | 821.65 mi (1,322.32 km) |
| Mairena del Alcor to Ollioules | 728.32 mi (1,172.12 km) |
| Mairena del Alcor to Olonne-sur-Mer | 665.20 mi (1,070.53 km) |
| Mairena del Alcor to Oloron-Sainte-Marie | 484.69 mi (780.03 km) |
| Mairena del Alcor to Onet Village | 649.80 mi (1,045.76 km) |
| Mairena del Alcor to Onnaing | 1,010.76 mi (1,626.67 km) |
| Mairena del Alcor to Orange | 722.43 mi (1,162.64 km) |
| Mairena del Alcor to Orchies | 1,008.15 mi (1,622.46 km) |
| Mairena del Alcor to Orleans | 824.14 mi (1,326.33 km) |
| Mairena del Alcor to Orly | 885.50 mi (1,425.07 km) |
| Mairena del Alcor to Ormesson-sur-Marne | 891.36 mi (1,434.51 km) |
| Mairena del Alcor to Orsay | 878.06 mi (1,413.10 km) |
