| Harpenden to Cervignano del Friuli | 745.97 mi (1,200.53 km) |
| Harpenden to Cesa | 1,018.63 mi (1,639.33 km) |
| Harpenden to Cesano Maderno | 607.46 mi (977.62 km) |
| Harpenden to Cesena | 785.99 mi (1,264.93 km) |
| Harpenden to Cesenatico | 788.03 mi (1,268.21 km) |
| Harpenden to Cetraro | 1,154.14 mi (1,857.40 km) |
| Harpenden to Cherasco | 622.34 mi (1,001.56 km) |
| Harpenden to Chiampo | 683.62 mi (1,100.18 km) |
| Harpenden to Chiaravalle | 850.27 mi (1,368.38 km) |
| Harpenden to Chiari | 637.25 mi (1,025.55 km) |
| Harpenden to Chiavari | 683.35 mi (1,099.75 km) |
| Harpenden to Chieri | 600.49 mi (966.40 km) |
| Harpenden to Chieti | 942.56 mi (1,516.90 km) |
| Harpenden to Chioggia | 734.47 mi (1,182.02 km) |
| Harpenden to Chiusi | 834.82 mi (1,343.51 km) |
