| Grenchen to Carmona | 943.28 mi (1,518.06 km) |
| Grenchen to Cartagena | 787.54 mi (1,267.43 km) |
| Grenchen to Cartama | 949.69 mi (1,528.37 km) |
| Grenchen to Cartaya | 1,008.04 mi (1,622.28 km) |
| Grenchen to Caspe | 551.58 mi (887.69 km) |
| Grenchen to Cassa de la Selva | 428.50 mi (689.60 km) |
| Grenchen to Castalla | 719.78 mi (1,158.37 km) |
| Grenchen to Castellbisbal | 476.66 mi (767.11 km) |
| Grenchen to Castelldefels | 488.35 mi (785.93 km) |
| Grenchen to Castello de Ampurias | 401.29 mi (645.81 km) |
| Grenchen to Castellon de la Plana | 620.86 mi (999.19 km) |
| Grenchen to Castilleja de la Cuesta | 962.57 mi (1,549.11 km) |
| Grenchen to Catarroja | 665.16 mi (1,070.47 km) |
| Grenchen to Catral | 749.35 mi (1,205.96 km) |
| Grenchen to Caudete | 722.69 mi (1,163.05 km) |
