| Backi Petrovac to Octeville | 1,030.25 mi (1,658.03 km) |
| Backi Petrovac to Oignies | 843.37 mi (1,357.28 km) |
| Backi Petrovac to Oissel | 905.95 mi (1,457.99 km) |
| Backi Petrovac to Olivet | 855.27 mi (1,376.43 km) |
| Backi Petrovac to Ollioules | 696.41 mi (1,120.77 km) |
| Backi Petrovac to Olonne-sur-Mer | 1,026.43 mi (1,651.87 km) |
| Backi Petrovac to Oloron-Sainte-Marie | 1,007.60 mi (1,621.58 km) |
| Backi Petrovac to Onet Village | 833.72 mi (1,341.74 km) |
| Backi Petrovac to Onnaing | 816.37 mi (1,313.81 km) |
| Backi Petrovac to Orange | 729.20 mi (1,173.53 km) |
| Backi Petrovac to Orchies | 833.05 mi (1,340.66 km) |
| Backi Petrovac to Orleans | 855.13 mi (1,376.19 km) |
| Backi Petrovac to Orly | 840.64 mi (1,352.88 km) |
| Backi Petrovac to Ormesson-sur-Marne | 834.61 mi (1,343.17 km) |
| Backi Petrovac to Orsay | 849.35 mi (1,366.90 km) |
