| Helensburgh to Brezovica | 1,075.25 mi (1,730.45 km) |
| Helensburgh to Cankova | 1,094.78 mi (1,761.88 km) |
| Helensburgh to Celje | 1,092.71 mi (1,758.54 km) |
| Helensburgh to Cerklje na Gorenjskem | 1,066.03 mi (1,715.61 km) |
| Helensburgh to Cerknica | 1,084.67 mi (1,745.60 km) |
| Helensburgh to Cerkno | 1,055.87 mi (1,699.26 km) |
| Helensburgh to Cerkvenjak | 1,099.53 mi (1,769.52 km) |
| Helensburgh to Cirkulane | 1,111.99 mi (1,789.58 km) |
| Helensburgh to Crensovci | 1,111.14 mi (1,788.21 km) |
| Helensburgh to Crna na Koroskem | 1,067.19 mi (1,717.47 km) |
| Helensburgh to Crnomelj | 1,123.30 mi (1,807.78 km) |
| Helensburgh to Destrnik | 1,100.93 mi (1,771.78 km) |
| Helensburgh to Divaca | 1,077.97 mi (1,734.83 km) |
| Helensburgh to Dobje | 1,101.84 mi (1,773.24 km) |
| Helensburgh to Dobrna | 1,086.40 mi (1,748.39 km) |
