| Birzai to Orbetello | 1,125.00 mi (1,810.51 km) |
| Birzai to Oria | 1,131.46 mi (1,820.91 km) |
| Birzai to Oristano | 1,343.35 mi (2,161.91 km) |
| Birzai to Orta Nova | 1,104.55 mi (1,777.61 km) |
| Birzai to Orte | 1,096.77 mi (1,765.09 km) |
| Birzai to Ortona | 1,061.94 mi (1,709.02 km) |
| Birzai to Orvieto | 1,086.99 mi (1,749.34 km) |
| Birzai to Orzinuovi | 983.48 mi (1,582.76 km) |
| Birzai to Osimo | 1,009.04 mi (1,623.89 km) |
| Birzai to Ospitaletto | 970.81 mi (1,562.36 km) |
| Birzai to Ostuni | 1,116.49 mi (1,796.82 km) |
| Birzai to Ottaviano | 1,157.17 mi (1,862.29 km) |
| Birzai to Ovada | 1,062.76 mi (1,710.35 km) |
| Birzai to Ozieri | 1,291.72 mi (2,078.82 km) |
| Birzai to Paceco | 1,378.55 mi (2,218.57 km) |
