| Helensburgh to Chivasso | 927.39 mi (1,492.49 km) |
| Helensburgh to Ciampino | 1,251.41 mi (2,013.94 km) |
| Helensburgh to Cicciano | 1,354.18 mi (2,179.34 km) |
| Helensburgh to Cingoli | 1,179.41 mi (1,898.07 km) |
| Helensburgh to Cinisello Balsamo | 942.10 mi (1,516.16 km) |
| Helensburgh to Cinisi | 1,481.94 mi (2,384.95 km) |
| Helensburgh to Cirie | 917.48 mi (1,476.53 km) |
| Helensburgh to Ciro Marina | 1,521.85 mi (2,449.18 km) |
| Helensburgh to Cislago | 929.53 mi (1,495.94 km) |
| Helensburgh to Cisterna di Latina | 1,269.92 mi (2,043.74 km) |
| Helensburgh to Cisternino | 1,453.72 mi (2,339.54 km) |
| Helensburgh to Citta di Castello | 1,145.82 mi (1,844.01 km) |
| Helensburgh to Citta Sant'Angelo | 1,251.70 mi (2,014.41 km) |
| Helensburgh to Cittadella | 1,011.20 mi (1,627.36 km) |
| Helensburgh to Cittanova | 1,551.03 mi (2,496.14 km) |
