| Romanshorn to Collegno | 191.69 mi (308.50 km) |
| Romanshorn to Cologno al Serio | 137.79 mi (221.75 km) |
| Romanshorn to Cologno Monzese | 140.65 mi (226.35 km) |
| Romanshorn to Colorno | 188.23 mi (302.93 km) |
| Romanshorn to Comacchio | 239.68 mi (385.73 km) |
| Romanshorn to Comiso | 780.34 mi (1,255.83 km) |
| Romanshorn to Como | 121.81 mi (196.03 km) |
| Romanshorn to Concordia Sagittaria | 206.98 mi (333.10 km) |
| Romanshorn to Concorezzo | 136.38 mi (219.48 km) |
| Romanshorn to Conegliano | 181.15 mi (291.54 km) |
| Romanshorn to Conselice | 241.69 mi (388.96 km) |
| Romanshorn to Conselve | 200.55 mi (322.75 km) |
| Romanshorn to Conversano | 595.35 mi (958.13 km) |
| Romanshorn to Copertino | 663.54 mi (1,067.86 km) |
| Romanshorn to Copparo | 218.79 mi (352.11 km) |
