| Helensburgh to Carmignano | 1,090.86 mi (1,755.57 km) |
| Helensburgh to Carovigno | 1,462.78 mi (2,354.11 km) |
| Helensburgh to Carpenedolo | 986.78 mi (1,588.07 km) |
| Helensburgh to Carpi | 1,032.25 mi (1,661.25 km) |
| Helensburgh to Carrara | 1,050.58 mi (1,690.74 km) |
| Helensburgh to Carugate | 945.33 mi (1,521.37 km) |
| Helensburgh to Casal di Principe | 1,339.87 mi (2,156.31 km) |
| Helensburgh to Casale Monferrato | 945.53 mi (1,521.68 km) |
| Helensburgh to Casale sul Sile | 1,030.70 mi (1,658.75 km) |
| Helensburgh to Casalecchio di Reno | 1,060.56 mi (1,706.80 km) |
| Helensburgh to Casalgrande | 1,039.25 mi (1,672.51 km) |
| Helensburgh to Casalmaggiore | 1,007.52 mi (1,621.45 km) |
| Helensburgh to Casalnuovo di Napoli | 1,351.83 mi (2,175.55 km) |
| Helensburgh to Casalpusterlengo | 975.22 mi (1,569.47 km) |
| Helensburgh to Casaluce | 1,342.73 mi (2,160.92 km) |
