| Grenchen to Cehegin | 782.14 mi (1,258.73 km) |
| Grenchen to Cervello | 482.01 mi (775.72 km) |
| Grenchen to Cervera | 486.57 mi (783.06 km) |
| Grenchen to Ceuti | 767.38 mi (1,234.99 km) |
| Grenchen to Cheste | 669.12 mi (1,076.84 km) |
| Grenchen to Chiclana de la Frontera | 1,017.36 mi (1,637.29 km) |
| Grenchen to Chipiona | 1,010.44 mi (1,626.15 km) |
| Grenchen to Chiva | 670.66 mi (1,079.33 km) |
| Grenchen to Churriana de la Vega | 893.29 mi (1,437.61 km) |
| Grenchen to Ciempozuelos | 732.90 mi (1,179.49 km) |
| Grenchen to Cieza | 762.33 mi (1,226.86 km) |
| Grenchen to Cisterniga | 708.61 mi (1,140.40 km) |
| Grenchen to Ciudad de Melilla | 980.82 mi (1,578.48 km) |
| Grenchen to Ciudad Real | 803.08 mi (1,292.43 km) |
| Grenchen to Ciudad-Rodrigo | 828.16 mi (1,332.79 km) |
