| Helston to Collegno | 690.43 mi (1,111.14 km) |
| Helston to Cologno al Serio | 759.38 mi (1,222.11 km) |
| Helston to Cologno Monzese | 743.60 mi (1,196.71 km) |
| Helston to Colorno | 810.88 mi (1,304.98 km) |
| Helston to Comacchio | 894.67 mi (1,439.83 km) |
| Helston to Comiso | 1,339.97 mi (2,156.47 km) |
| Helston to Como | 725.87 mi (1,168.18 km) |
| Helston to Concordia Sagittaria | 887.94 mi (1,429.00 km) |
| Helston to Concorezzo | 743.89 mi (1,197.17 km) |
| Helston to Conegliano | 860.40 mi (1,384.69 km) |
| Helston to Conselice | 886.55 mi (1,426.77 km) |
| Helston to Conselve | 862.86 mi (1,388.63 km) |
| Helston to Conversano | 1,246.73 mi (2,006.42 km) |
| Helston to Copertino | 1,315.13 mi (2,116.50 km) |
| Helston to Copparo | 872.86 mi (1,404.74 km) |
