| Grenchen to Cortona | 350.71 mi (564.41 km) |
| Grenchen to Cosenza | 703.17 mi (1,131.65 km) |
| Grenchen to Cossato | 118.05 mi (189.99 km) |
| Grenchen to Costa Volpino | 159.19 mi (256.20 km) |
| Grenchen to Creazzo | 225.98 mi (363.68 km) |
| Grenchen to Crema | 166.74 mi (268.34 km) |
| Grenchen to Cremona | 190.05 mi (305.86 km) |
| Grenchen to Crevalcore | 248.40 mi (399.76 km) |
| Grenchen to Crispiano | 667.80 mi (1,074.71 km) |
| Grenchen to Crosia | 705.32 mi (1,135.10 km) |
| Grenchen to Crotone | 743.13 mi (1,195.95 km) |
| Grenchen to Cuneo | 194.11 mi (312.38 km) |
| Grenchen to Cuorgne | 125.02 mi (201.19 km) |
| Grenchen to Cusano Milanino | 141.79 mi (228.19 km) |
| Grenchen to Cutro | 741.49 mi (1,193.31 km) |
