| Grenchen to Castelfidardo | 394.16 mi (634.33 km) |
| Grenchen to Castelfiorentino | 302.50 mi (486.83 km) |
| Grenchen to Castelfranco di Sopra | 318.49 mi (512.56 km) |
| Grenchen to Castelfranco di Sotto | 290.79 mi (467.98 km) |
| Grenchen to Castelfranco Emilia | 251.02 mi (403.97 km) |
| Grenchen to Castelfranco Veneto | 240.30 mi (386.73 km) |
| Grenchen to Castellabate | 607.96 mi (978.42 km) |
| Grenchen to Castellammare del Golfo | 691.44 mi (1,112.76 km) |
| Grenchen to Castellammare di Stabia | 570.14 mi (917.56 km) |
| Grenchen to Castellamonte | 125.87 mi (202.56 km) |
| Grenchen to Castellana Grotte | 651.34 mi (1,048.23 km) |
| Grenchen to Castellaneta | 655.31 mi (1,054.62 km) |
| Grenchen to Castellanza | 130.22 mi (209.56 km) |
| Grenchen to Castellarano | 243.69 mi (392.18 km) |
| Grenchen to Castelleone | 172.92 mi (278.28 km) |
