| Ostrow Wielkopolski to Karditsa | 871.21 mi (1,402.07 km) |
| Ostrow Wielkopolski to Kastoria | 786.53 mi (1,265.80 km) |
| Ostrow Wielkopolski to Katerini | 817.57 mi (1,315.76 km) |
| Ostrow Wielkopolski to Keratsini | 986.42 mi (1,587.49 km) |
| Ostrow Wielkopolski to Kerkyra | 836.99 mi (1,347.00 km) |
| Ostrow Wielkopolski to Kiato | 972.31 mi (1,564.78 km) |
| Ostrow Wielkopolski to Kifisia | 981.46 mi (1,579.52 km) |
| Ostrow Wielkopolski to Kilkis | 774.89 mi (1,247.06 km) |
| Ostrow Wielkopolski to Komotini | 812.93 mi (1,308.28 km) |
| Ostrow Wielkopolski to Korinthos | 979.29 mi (1,576.01 km) |
| Ostrow Wielkopolski to Koropi | 994.49 mi (1,600.48 km) |
| Ostrow Wielkopolski to Korydallos | 985.78 mi (1,586.45 km) |
| Ostrow Wielkopolski to Kos | 1,121.56 mi (1,804.98 km) |
| Ostrow Wielkopolski to Kozani | 806.66 mi (1,298.19 km) |
| Ostrow Wielkopolski to Lagos | 807.01 mi (1,298.76 km) |
