| Olhao to Orbetello | 1,076.41 mi (1,732.31 km) |
| Olhao to Oria | 1,388.24 mi (2,234.15 km) |
| Olhao to Oristano | 909.56 mi (1,463.79 km) |
| Olhao to Orta Nova | 1,291.71 mi (2,078.80 km) |
| Olhao to Orte | 1,134.97 mi (1,826.57 km) |
| Olhao to Ortona | 1,234.27 mi (1,986.37 km) |
| Olhao to Orvieto | 1,125.37 mi (1,811.11 km) |
| Olhao to Orzinuovi | 1,086.39 mi (1,748.38 km) |
| Olhao to Osimo | 1,205.44 mi (1,939.96 km) |
| Olhao to Ospitaletto | 1,097.20 mi (1,765.77 km) |
| Olhao to Ostuni | 1,386.19 mi (2,230.85 km) |
| Olhao to Ottaviano | 1,224.61 mi (1,970.83 km) |
| Olhao to Ovada | 1,006.91 mi (1,620.46 km) |
| Olhao to Ozieri | 938.03 mi (1,509.61 km) |
| Olhao to Paceco | 1,117.39 mi (1,798.27 km) |
