| Romanshorn to Castrovillari | 634.56 mi (1,021.22 km) |
| Romanshorn to Catania | 753.59 mi (1,212.78 km) |
| Romanshorn to Catanzaro | 700.19 mi (1,126.85 km) |
| Romanshorn to Cattolica | 297.00 mi (477.98 km) |
| Romanshorn to Cava de' Tirreni | 542.92 mi (873.75 km) |
| Romanshorn to Cavallino | 665.68 mi (1,071.31 km) |
| Romanshorn to Cavarzere | 212.11 mi (341.35 km) |
| Romanshorn to Cave | 434.08 mi (698.58 km) |
| Romanshorn to Cavriago | 205.71 mi (331.06 km) |
| Romanshorn to Cavriglia | 297.92 mi (479.45 km) |
| Romanshorn to Cazzago San Martino | 140.57 mi (226.23 km) |
| Romanshorn to Ceccano | 458.10 mi (737.24 km) |
| Romanshorn to Cecina | 298.76 mi (480.81 km) |
| Romanshorn to Cefalu | 699.24 mi (1,125.31 km) |
| Romanshorn to Ceglie Messapico | 624.91 mi (1,005.70 km) |
