| Karlovac to Orzesze | 354.89 mi (571.15 km) |
| Karlovac to Osowa | 631.31 mi (1,016.00 km) |
| Karlovac to Ostroda | 600.90 mi (967.05 km) |
| Karlovac to Ostroleka | 589.51 mi (948.72 km) |
| Karlovac to Ostrow Mazowiecka | 580.81 mi (934.72 km) |
| Karlovac to Ostrow Wielkopolski | 438.40 mi (705.54 km) |
| Karlovac to Ostrowiec Swietokrzyski | 462.67 mi (744.59 km) |
| Karlovac to Ostrzeszow | 424.20 mi (682.68 km) |
| Karlovac to Oswiecim | 357.83 mi (575.87 km) |
| Karlovac to Otwock | 526.64 mi (847.54 km) |
| Karlovac to Ozarow Mazowiecki | 522.56 mi (840.98 km) |
| Karlovac to Ozimek | 379.00 mi (609.94 km) |
| Karlovac to Ozorkow | 479.03 mi (770.92 km) |
| Karlovac to Pabianice | 460.55 mi (741.19 km) |
| Karlovac to Parczew | 540.28 mi (869.50 km) |
