| Ilirska Bistrica to Opole | 390.95 mi (629.17 km) |
| Ilirska Bistrica to Orzesze | 378.92 mi (609.81 km) |
| Ilirska Bistrica to Osowa | 639.85 mi (1,029.74 km) |
| Ilirska Bistrica to Ostroda | 616.84 mi (992.70 km) |
| Ilirska Bistrica to Ostroleka | 613.27 mi (986.95 km) |
| Ilirska Bistrica to Ostrow Mazowiecka | 606.69 mi (976.37 km) |
| Ilirska Bistrica to Ostrow Wielkopolski | 450.49 mi (724.99 km) |
| Ilirska Bistrica to Ostrowiec Swietokrzyski | 495.08 mi (796.75 km) |
| Ilirska Bistrica to Ostrzeszow | 437.71 mi (704.42 km) |
| Ilirska Bistrica to Oswiecim | 385.26 mi (620.01 km) |
| Ilirska Bistrica to Otwock | 553.03 mi (890.02 km) |
| Ilirska Bistrica to Ozarow Mazowiecki | 546.77 mi (879.94 km) |
| Ilirska Bistrica to Ozimek | 397.09 mi (639.05 km) |
| Ilirska Bistrica to Ozorkow | 497.66 mi (800.90 km) |
| Ilirska Bistrica to Pabianice | 480.90 mi (773.93 km) |
