| Romanshorn to Koscian | 450.39 mi (724.84 km) |
| Romanshorn to Koscielisko | 496.63 mi (799.26 km) |
| Romanshorn to Koscierzyna | 587.94 mi (946.20 km) |
| Romanshorn to Kostrzyn | 482.76 mi (776.92 km) |
| Romanshorn to Kostrzyn nad Odra | 419.25 mi (674.71 km) |
| Romanshorn to Koszalin | 546.09 mi (878.84 km) |
| Romanshorn to Kowary | 367.65 mi (591.68 km) |
| Romanshorn to Kozienice | 612.50 mi (985.72 km) |
| Romanshorn to Kozuchow | 401.79 mi (646.62 km) |
| Romanshorn to Kozy | 473.56 mi (762.11 km) |
| Romanshorn to Krakow | 510.88 mi (822.19 km) |
| Romanshorn to Krapkowice | 438.35 mi (705.46 km) |
| Romanshorn to Krasnik | 623.65 mi (1,003.66 km) |
| Romanshorn to Krasnystaw | 665.35 mi (1,070.77 km) |
| Romanshorn to Krosno | 583.92 mi (939.72 km) |
