| Kars to Opole | 1,390.25 mi (2,237.39 km) |
| Kars to Orzesze | 1,344.20 mi (2,163.28 km) |
| Kars to Osowa | 1,480.42 mi (2,382.50 km) |
| Kars to Ostroda | 1,402.68 mi (2,257.40 km) |
| Kars to Ostroleka | 1,323.61 mi (2,130.14 km) |
| Kars to Ostrow Mazowiecka | 1,302.09 mi (2,095.52 km) |
| Kars to Ostrow Wielkopolski | 1,419.73 mi (2,284.83 km) |
| Kars to Ostrowiec Swietokrzyski | 1,258.27 mi (2,024.98 km) |
| Kars to Ostrzeszow | 1,408.97 mi (2,267.52 km) |
| Kars to Oswiecim | 1,321.92 mi (2,127.43 km) |
| Kars to Otwock | 1,301.19 mi (2,094.06 km) |
| Kars to Ozarow Mazowiecki | 1,321.85 mi (2,127.31 km) |
| Kars to Ozimek | 1,378.92 mi (2,219.16 km) |
| Kars to Ozorkow | 1,371.39 mi (2,207.04 km) |
| Kars to Pabianice | 1,358.23 mi (2,185.85 km) |
