| Backi Petrovac to Orbetello | 463.11 mi (745.30 km) |
| Backi Petrovac to Oria | 350.11 mi (563.45 km) |
| Backi Petrovac to Oristano | 673.37 mi (1,083.69 km) |
| Backi Petrovac to Orta Nova | 339.81 mi (546.88 km) |
| Backi Petrovac to Orte | 410.63 mi (660.84 km) |
| Backi Petrovac to Ortona | 331.81 mi (533.99 km) |
| Backi Petrovac to Orvieto | 413.79 mi (665.93 km) |
| Backi Petrovac to Orzinuovi | 468.46 mi (753.91 km) |
| Backi Petrovac to Osimo | 328.04 mi (527.93 km) |
| Backi Petrovac to Ospitaletto | 461.23 mi (742.27 km) |
| Backi Petrovac to Ostuni | 335.38 mi (539.75 km) |
| Backi Petrovac to Ottaviano | 404.40 mi (650.82 km) |
| Backi Petrovac to Ovada | 536.65 mi (863.65 km) |
| Backi Petrovac to Ozieri | 628.04 mi (1,010.73 km) |
| Backi Petrovac to Paceco | 625.46 mi (1,006.58 km) |
