| Helensburgh to Celano | 1,261.81 mi (2,030.68 km) |
| Helensburgh to Cento | 1,046.57 mi (1,684.28 km) |
| Helensburgh to Cepagatti | 1,260.65 mi (2,028.82 km) |
| Helensburgh to Ceprano | 1,291.53 mi (2,078.51 km) |
| Helensburgh to Cercola | 1,354.72 mi (2,180.21 km) |
| Helensburgh to Cerea | 1,018.75 mi (1,639.52 km) |
| Helensburgh to Cerese | 1,013.50 mi (1,631.07 km) |
| Helensburgh to Cerignola | 1,377.18 mi (2,216.36 km) |
| Helensburgh to Cermenate | 929.91 mi (1,496.55 km) |
| Helensburgh to Cernusco sul Naviglio | 947.22 mi (1,524.40 km) |
| Helensburgh to Cerreto Guidi | 1,090.04 mi (1,754.25 km) |
| Helensburgh to Cerro Maggiore | 931.92 mi (1,499.78 km) |
| Helensburgh to Certaldo | 1,107.00 mi (1,781.55 km) |
| Helensburgh to Cerveteri | 1,226.00 mi (1,973.06 km) |
| Helensburgh to Cervia | 1,104.33 mi (1,777.25 km) |
