| Grenchen to Cocentaina | 704.53 mi (1,133.84 km) |
| Grenchen to Coin | 956.11 mi (1,538.71 km) |
| Grenchen to Colindres | 587.99 mi (946.27 km) |
| Grenchen to Collado-Villalba | 725.04 mi (1,166.83 km) |
| Grenchen to Colmenar Viejo | 714.49 mi (1,149.86 km) |
| Grenchen to Colmenarejo | 728.76 mi (1,172.82 km) |
| Grenchen to Conil de la Frontera | 1,023.16 mi (1,646.61 km) |
| Grenchen to Consuegra | 767.37 mi (1,234.96 km) |
| Grenchen to Corbera de Llobregat | 481.56 mi (774.99 km) |
| Grenchen to Cordoba | 891.09 mi (1,434.08 km) |
| Grenchen to Coria del Rio | 967.79 mi (1,557.52 km) |
| Grenchen to Crevillente | 744.18 mi (1,197.65 km) |
| Grenchen to Cuarte de Huerva | 563.84 mi (907.42 km) |
| Grenchen to Cubellas | 500.79 mi (805.95 km) |
| Grenchen to Cuellar | 702.64 mi (1,130.79 km) |
