| Saint-Denis to Orbetello | 5,203.64 mi (8,374.44 km) |
| Saint-Denis to Oria | 4,887.84 mi (7,866.21 km) |
| Saint-Denis to Oristano | 5,171.08 mi (8,322.04 km) |
| Saint-Denis to Orta Nova | 4,994.92 mi (8,038.54 km) |
| Saint-Denis to Orte | 5,164.77 mi (8,311.89 km) |
| Saint-Denis to Ortona | 5,092.16 mi (8,195.04 km) |
| Saint-Denis to Orvieto | 5,187.42 mi (8,348.34 km) |
| Saint-Denis to Orzinuovi | 5,397.23 mi (8,686.00 km) |
| Saint-Denis to Osimo | 5,181.96 mi (8,339.55 km) |
| Saint-Denis to Ospitaletto | 5,400.48 mi (8,691.23 km) |
| Saint-Denis to Ostuni | 4,902.24 mi (7,889.40 km) |
| Saint-Denis to Ottaviano | 5,010.03 mi (8,062.86 km) |
| Saint-Denis to Ovada | 5,402.39 mi (8,694.30 km) |
| Saint-Denis to Ozieri | 5,189.15 mi (8,351.13 km) |
| Saint-Denis to Paceco | 4,928.29 mi (7,931.31 km) |
