| Cities | Distance |
|---|---|
| Romanshorn to Karlovo | 824.74 mi (1,327.28 km) |
| Romanshorn to Karnobat | 922.15 mi (1,484.06 km) |
| Romanshorn to Kavarna | 959.50 mi (1,544.16 km) |
| Romanshorn to Kazanlak | 851.90 mi (1,371.01 km) |
| Romanshorn to Knezha | 764.59 mi (1,230.49 km) |
| Romanshorn to Kostinbrod | 748.93 mi (1,205.29 km) |
| Romanshorn to Kozloduy | 740.25 mi (1,191.32 km) |
| Romanshorn to Kyustendil | 745.66 mi (1,200.03 km) |
| Romanshorn to Levski | 815.86 mi (1,312.99 km) |
| Romanshorn to Lom | 716.72 mi (1,153.45 km) |
| Romanshorn to Lovech | 804.46 mi (1,294.66 km) |
| Romanshorn to Lukovit | 777.82 mi (1,251.78 km) |
| Romanshorn to Lyaskovets | 850.37 mi (1,368.53 km) |
| Romanshorn to Mezdra | 758.75 mi (1,221.09 km) |
| Romanshorn to Momchilgrad | 891.46 mi (1,434.66 km) |