| Grenchen to Cividale del Friuli | 296.01 mi (476.39 km) |
| Grenchen to Civita Castellana | 418.01 mi (672.73 km) |
| Grenchen to Civitanova Marche | 408.77 mi (657.85 km) |
| Grenchen to Civitavecchia | 412.84 mi (664.41 km) |
| Grenchen to Civitella in Val di Chiana | 334.66 mi (538.58 km) |
| Grenchen to Clusone | 151.28 mi (243.46 km) |
| Grenchen to Coccaglio | 166.68 mi (268.25 km) |
| Grenchen to Codigoro | 278.91 mi (448.85 km) |
| Grenchen to Codogno | 178.54 mi (287.34 km) |
| Grenchen to Codroipo | 278.32 mi (447.91 km) |
| Grenchen to Cogoleto | 202.69 mi (326.19 km) |
| Grenchen to Colle di Val d'Elsa | 318.63 mi (512.79 km) |
| Grenchen to Colle Salvetti | 289.73 mi (466.28 km) |
| Grenchen to Collecchio | 216.25 mi (348.03 km) |
| Grenchen to Colleferro | 467.69 mi (752.68 km) |
