| Romanshorn to Cocentaina | 782.99 mi (1,260.09 km) |
| Romanshorn to Coin | 1,040.64 mi (1,674.76 km) |
| Romanshorn to Colindres | 682.77 mi (1,098.82 km) |
| Romanshorn to Collado-Villalba | 816.10 mi (1,313.39 km) |
| Romanshorn to Colmenar Viejo | 805.29 mi (1,295.99 km) |
| Romanshorn to Colmenarejo | 819.70 mi (1,319.18 km) |
| Romanshorn to Conil de la Frontera | 1,109.37 mi (1,785.35 km) |
| Romanshorn to Consuegra | 855.44 mi (1,376.70 km) |
| Romanshorn to Corbera de Llobregat | 560.09 mi (901.38 km) |
| Romanshorn to Cordoba | 978.00 mi (1,573.95 km) |
| Romanshorn to Coria del Rio | 1,055.67 mi (1,698.94 km) |
| Romanshorn to Crevillente | 822.47 mi (1,323.64 km) |
| Romanshorn to Cuarte de Huerva | 652.03 mi (1,049.34 km) |
| Romanshorn to Cubellas | 579.60 mi (932.78 km) |
| Romanshorn to Cuellar | 795.39 mi (1,280.05 km) |
