| Kos to Orzesze | 1,010.97 mi (1,626.99 km) |
| Kos to Osowa | 1,283.78 mi (2,066.04 km) |
| Kos to Ostroda | 1,215.11 mi (1,955.53 km) |
| Kos to Ostroleka | 1,153.30 mi (1,856.07 km) |
| Kos to Ostrow Mazowiecka | 1,131.82 mi (1,821.49 km) |
| Kos to Ostrow Wielkopolski | 1,121.56 mi (1,804.98 km) |
| Kos to Ostrowiec Swietokrzyski | 1,014.68 mi (1,632.96 km) |
| Kos to Ostrzeszow | 1,105.00 mi (1,778.33 km) |
| Kos to Oswiecim | 994.52 mi (1,600.53 km) |
| Kos to Otwock | 1,094.13 mi (1,760.84 km) |
| Kos to Ozarow Mazowiecki | 1,106.92 mi (1,781.41 km) |
| Kos to Ozimek | 1,053.99 mi (1,696.23 km) |
| Kos to Ozorkow | 1,114.13 mi (1,793.01 km) |
| Kos to Pabianice | 1,092.36 mi (1,757.99 km) |
| Kos to Parczew | 1,043.56 mi (1,679.45 km) |
