| Grenchen to Collegno | 146.24 mi (235.36 km) |
| Grenchen to Cologno al Serio | 156.15 mi (251.30 km) |
| Grenchen to Cologno Monzese | 145.73 mi (234.52 km) |
| Grenchen to Colorno | 211.70 mi (340.70 km) |
| Grenchen to Comacchio | 287.15 mi (462.12 km) |
| Grenchen to Comiso | 797.38 mi (1,283.25 km) |
| Grenchen to Como | 124.71 mi (200.70 km) |
| Grenchen to Concordia Sagittaria | 277.43 mi (446.48 km) |
| Grenchen to Concorezzo | 144.14 mi (231.97 km) |
| Grenchen to Conegliano | 249.69 mi (401.83 km) |
| Grenchen to Conselice | 282.27 mi (454.27 km) |
| Grenchen to Conselve | 252.86 mi (406.95 km) |
| Grenchen to Conversano | 645.42 mi (1,038.70 km) |
| Grenchen to Copertino | 714.22 mi (1,149.43 km) |
| Grenchen to Copparo | 265.12 mi (426.66 km) |
