| Helensburgh to Busto Arsizio | 928.55 mi (1,494.35 km) |
| Helensburgh to Busto Garolfo | 933.16 mi (1,501.78 km) |
| Helensburgh to Cabras | 1,264.45 mi (2,034.94 km) |
| Helensburgh to Cadelbosco di Sopra | 1,025.12 mi (1,649.77 km) |
| Helensburgh to Cadoneghe | 1,026.51 mi (1,652.01 km) |
| Helensburgh to Cagli | 1,152.52 mi (1,854.81 km) |
| Helensburgh to Cagliari | 1,321.51 mi (2,126.77 km) |
| Helensburgh to Cairo Montenotte | 983.77 mi (1,583.22 km) |
| Helensburgh to Caivano | 1,348.47 mi (2,170.16 km) |
| Helensburgh to Calcinaia | 1,087.54 mi (1,750.23 km) |
| Helensburgh to Calcinato | 981.12 mi (1,578.96 km) |
| Helensburgh to Calderara di Reno | 1,055.40 mi (1,698.50 km) |
| Helensburgh to Caldogno | 1,005.16 mi (1,617.65 km) |
| Helensburgh to Calenzano | 1,092.19 mi (1,757.70 km) |
| Helensburgh to Calolziocorte | 934.06 mi (1,503.22 km) |
