| Ilirska Bistrica to Octeville | 790.06 mi (1,271.48 km) |
| Ilirska Bistrica to Oignies | 619.83 mi (997.52 km) |
| Ilirska Bistrica to Oissel | 666.74 mi (1,073.02 km) |
| Ilirska Bistrica to Olivet | 605.51 mi (974.48 km) |
| Ilirska Bistrica to Ollioules | 447.62 mi (720.37 km) |
| Ilirska Bistrica to Olonne-sur-Mer | 770.01 mi (1,239.21 km) |
| Ilirska Bistrica to Oloron-Sainte-Marie | 750.70 mi (1,208.13 km) |
| Ilirska Bistrica to Onet Village | 575.45 mi (926.09 km) |
| Ilirska Bistrica to Onnaing | 593.88 mi (955.76 km) |
| Ilirska Bistrica to Orange | 472.66 mi (760.67 km) |
| Ilirska Bistrica to Orchies | 610.39 mi (982.32 km) |
| Ilirska Bistrica to Orleans | 605.63 mi (974.67 km) |
| Ilirska Bistrica to Orly | 598.08 mi (962.52 km) |
| Ilirska Bistrica to Ormesson-sur-Marne | 592.62 mi (953.73 km) |
| Ilirska Bistrica to Orsay | 606.13 mi (975.47 km) |
