| Casamassima to Octeville | 1,078.63 mi (1,735.88 km) |
| Casamassima to Oignies | 937.22 mi (1,508.31 km) |
| Casamassima to Oissel | 961.64 mi (1,547.60 km) |
| Casamassima to Olivet | 879.45 mi (1,415.33 km) |
| Casamassima to Ollioules | 587.29 mi (945.16 km) |
| Casamassima to Olonne-sur-Mer | 1,006.48 mi (1,619.77 km) |
| Casamassima to Oloron-Sainte-Marie | 910.27 mi (1,464.93 km) |
| Casamassima to Onet Village | 763.90 mi (1,229.38 km) |
| Casamassima to Onnaing | 913.19 mi (1,469.63 km) |
| Casamassima to Orange | 653.73 mi (1,052.08 km) |
| Casamassima to Orchies | 928.96 mi (1,495.02 km) |
| Casamassima to Orleans | 880.33 mi (1,416.76 km) |
| Casamassima to Orly | 889.80 mi (1,431.99 km) |
| Casamassima to Ormesson-sur-Marne | 885.72 mi (1,425.42 km) |
| Casamassima to Orsay | 896.12 mi (1,442.17 km) |
