| Helensburgh to Cervignano del Friuli | 1,050.35 mi (1,690.38 km) |
| Helensburgh to Cesa | 1,345.61 mi (2,165.55 km) |
| Helensburgh to Cesano Maderno | 935.56 mi (1,505.64 km) |
| Helensburgh to Cesena | 1,107.71 mi (1,782.69 km) |
| Helensburgh to Cesenatico | 1,108.72 mi (1,784.32 km) |
| Helensburgh to Cetraro | 1,479.87 mi (2,381.61 km) |
| Helensburgh to Cherasco | 958.86 mi (1,543.14 km) |
| Helensburgh to Chiampo | 1,001.56 mi (1,611.85 km) |
| Helensburgh to Chiaravalle | 1,169.86 mi (1,882.71 km) |
| Helensburgh to Chiari | 962.48 mi (1,548.96 km) |
| Helensburgh to Chiavari | 1,016.25 mi (1,635.49 km) |
| Helensburgh to Chieri | 936.17 mi (1,506.62 km) |
| Helensburgh to Chieti | 1,264.53 mi (2,035.07 km) |
| Helensburgh to Chioggia | 1,049.43 mi (1,688.89 km) |
| Helensburgh to Chiusi | 1,162.85 mi (1,871.42 km) |
