| Casteldaccia to Octeville | 1,096.78 mi (1,765.09 km) |
| Casteldaccia to Oignies | 1,001.91 mi (1,612.42 km) |
| Casteldaccia to Oissel | 994.79 mi (1,600.96 km) |
| Casteldaccia to Olivet | 895.65 mi (1,441.42 km) |
| Casteldaccia to Ollioules | 534.63 mi (860.40 km) |
| Casteldaccia to Olonne-sur-Mer | 974.78 mi (1,568.76 km) |
| Casteldaccia to Oloron-Sainte-Marie | 820.88 mi (1,321.09 km) |
| Casteldaccia to Onet Village | 715.73 mi (1,151.86 km) |
| Casteldaccia to Onnaing | 982.25 mi (1,580.79 km) |
| Casteldaccia to Orange | 618.45 mi (995.30 km) |
| Casteldaccia to Orchies | 995.94 mi (1,602.81 km) |
| Casteldaccia to Orleans | 897.27 mi (1,444.01 km) |
| Casteldaccia to Orly | 924.63 mi (1,488.04 km) |
| Casteldaccia to Ormesson-sur-Marne | 922.48 mi (1,484.60 km) |
| Casteldaccia to Orsay | 928.45 mi (1,494.20 km) |
