| Romanshorn to Kidricevo | 313.89 mi (505.16 km) |
| Romanshorn to Kobarid | 219.04 mi (352.51 km) |
| Romanshorn to Kobilje | 336.33 mi (541.27 km) |
| Romanshorn to Kocevje | 292.90 mi (471.38 km) |
| Romanshorn to Komen | 240.68 mi (387.34 km) |
| Romanshorn to Komenda | 262.00 mi (421.64 km) |
| Romanshorn to Koper | 250.13 mi (402.55 km) |
| Romanshorn to Kostanjevica na Krki | 310.94 mi (500.41 km) |
| Romanshorn to Kostel | 299.61 mi (482.18 km) |
| Romanshorn to Kozje | 310.69 mi (500.01 km) |
| Romanshorn to Kranj | 253.71 mi (408.31 km) |
| Romanshorn to Kranjska Gora | 221.54 mi (356.54 km) |
| Romanshorn to Krizevci | 326.55 mi (525.53 km) |
| Romanshorn to Krsko | 310.60 mi (499.86 km) |
| Romanshorn to Kuzma | 319.70 mi (514.51 km) |
