| Grammichele to Collegno | 655.32 mi (1,054.64 km) |
| Grammichele to Cologno al Serio | 631.97 mi (1,017.05 km) |
| Grammichele to Cologno Monzese | 637.72 mi (1,026.31 km) |
| Grammichele to Colorno | 577.27 mi (929.02 km) |
| Grammichele to Comacchio | 532.72 mi (857.32 km) |
| Grammichele to Comiso | 18.40 mi (29.61 km) |
| Grammichele to Como | 659.26 mi (1,060.98 km) |
| Grammichele to Concordia Sagittaria | 598.03 mi (962.44 km) |
| Grammichele to Concorezzo | 640.18 mi (1,030.27 km) |
| Grammichele to Conegliano | 611.19 mi (983.62 km) |
| Grammichele to Conselice | 525.26 mi (845.32 km) |
| Grammichele to Conselve | 572.32 mi (921.07 km) |
| Grammichele to Conversano | 291.34 mi (468.86 km) |
| Grammichele to Copertino | 279.79 mi (450.28 km) |
| Grammichele to Copparo | 550.62 mi (886.14 km) |
