| Fermo to Octeville | 855.07 mi (1,376.11 km) |
| Fermo to Oignies | 714.21 mi (1,149.41 km) |
| Fermo to Oissel | 737.51 mi (1,186.91 km) |
| Fermo to Olivet | 656.89 mi (1,057.16 km) |
| Fermo to Ollioules | 396.51 mi (638.13 km) |
| Fermo to Olonne-sur-Mer | 792.23 mi (1,274.97 km) |
| Fermo to Oloron-Sainte-Marie | 720.77 mi (1,159.96 km) |
| Fermo to Onet Village | 560.75 mi (902.44 km) |
| Fermo to Onnaing | 690.58 mi (1,111.39 km) |
| Fermo to Orange | 450.12 mi (724.39 km) |
| Fermo to Orchies | 706.17 mi (1,136.48 km) |
| Fermo to Orleans | 657.68 mi (1,058.44 km) |
| Fermo to Orly | 665.72 mi (1,071.37 km) |
| Fermo to Ormesson-sur-Marne | 661.58 mi (1,064.71 km) |
| Fermo to Orsay | 672.14 mi (1,081.71 km) |
