| Romanshorn to Kluczbork | 463.62 mi (746.13 km) |
| Romanshorn to Knurow | 461.25 mi (742.32 km) |
| Romanshorn to Kobylka | 620.05 mi (997.88 km) |
| Romanshorn to Kokoszki | 613.97 mi (988.09 km) |
| Romanshorn to Kolbuszowa | 592.54 mi (953.61 km) |
| Romanshorn to Kolno | 683.20 mi (1,099.50 km) |
| Romanshorn to Kolo | 522.02 mi (840.11 km) |
| Romanshorn to Kolobrzeg | 530.85 mi (854.32 km) |
| Romanshorn to Koluszki | 548.66 mi (882.98 km) |
| Romanshorn to Komorniki | 460.38 mi (740.90 km) |
| Romanshorn to Konin | 509.95 mi (820.68 km) |
| Romanshorn to Konskie | 556.57 mi (895.72 km) |
| Romanshorn to Konstancin-Jeziorna | 609.12 mi (980.28 km) |
| Romanshorn to Konstantynow Lodzki | 531.10 mi (854.72 km) |
| Romanshorn to Koronowo | 547.41 mi (880.97 km) |
