| Birecik to Orbetello | 1,463.77 mi (2,355.71 km) |
| Birecik to Oria | 1,119.31 mi (1,801.35 km) |
| Birecik to Oristano | 1,594.85 mi (2,566.67 km) |
| Birecik to Orta Nova | 1,225.35 mi (1,972.01 km) |
| Birecik to Orte | 1,404.47 mi (2,260.28 km) |
| Birecik to Ortona | 1,301.63 mi (2,094.78 km) |
| Birecik to Orvieto | 1,420.61 mi (2,286.24 km) |
| Birecik to Orzinuovi | 1,558.33 mi (2,507.89 km) |
| Birecik to Osimo | 1,360.52 mi (2,189.54 km) |
| Birecik to Ospitaletto | 1,553.96 mi (2,500.85 km) |
| Birecik to Ostuni | 1,123.65 mi (1,808.34 km) |
| Birecik to Ottaviano | 1,286.15 mi (2,069.85 km) |
| Birecik to Ovada | 1,610.74 mi (2,592.23 km) |
| Birecik to Ozieri | 1,572.03 mi (2,529.94 km) |
| Birecik to Paceco | 1,390.95 mi (2,238.52 km) |
