| Civita Castellana to Octeville | 841.62 mi (1,354.46 km) |
| Civita Castellana to Oignies | 720.15 mi (1,158.97 km) |
| Civita Castellana to Oissel | 729.37 mi (1,173.81 km) |
| Civita Castellana to Olivet | 640.07 mi (1,030.09 km) |
| Civita Castellana to Ollioules | 338.13 mi (544.16 km) |
| Civita Castellana to Olonne-sur-Mer | 757.40 mi (1,218.91 km) |
| Civita Castellana to Oloron-Sainte-Marie | 662.71 mi (1,066.53 km) |
| Civita Castellana to Onet Village | 513.29 mi (826.07 km) |
| Civita Castellana to Onnaing | 698.42 mi (1,124.00 km) |
| Civita Castellana to Orange | 403.13 mi (648.77 km) |
| Civita Castellana to Orchies | 713.13 mi (1,147.67 km) |
| Civita Castellana to Orleans | 641.20 mi (1,031.91 km) |
| Civita Castellana to Orly | 657.50 mi (1,058.15 km) |
| Civita Castellana to Ormesson-sur-Marne | 654.20 mi (1,052.84 km) |
| Civita Castellana to Orsay | 662.86 mi (1,066.78 km) |
