| Romanshorn to Cascais | 1,122.87 mi (1,807.08 km) |
| Romanshorn to Castelo Branco | 994.60 mi (1,600.65 km) |
| Romanshorn to Castro Daire | 968.89 mi (1,559.28 km) |
| Romanshorn to Celorico de Basto | 953.46 mi (1,534.45 km) |
| Romanshorn to Chamusca | 1,055.69 mi (1,698.96 km) |
| Romanshorn to Chaves | 917.19 mi (1,476.08 km) |
| Romanshorn to Cinfaes | 969.90 mi (1,560.90 km) |
| Romanshorn to Coimbra | 1,017.52 mi (1,637.53 km) |
| Romanshorn to Condeixa-a-Nova | 1,024.37 mi (1,648.56 km) |
| Romanshorn to Corroios | 1,115.51 mi (1,795.25 km) |
| Romanshorn to Coruche | 1,074.55 mi (1,729.32 km) |
| Romanshorn to Costa de Caparica | 1,117.73 mi (1,798.81 km) |
| Romanshorn to Covilha | 975.03 mi (1,569.17 km) |
| Romanshorn to Eiras | 1,016.04 mi (1,635.16 km) |
| Romanshorn to Elvas | 1,022.16 mi (1,645.02 km) |
