| Harpenden to Cavdir | 1,774.32 mi (2,855.50 km) |
| Harpenden to Cay | 1,759.81 mi (2,832.15 km) |
| Harpenden to Caybasi | 1,906.88 mi (3,068.82 km) |
| Harpenden to Caycuma | 1,679.73 mi (2,703.27 km) |
| Harpenden to Cayeli | 2,058.47 mi (3,312.79 km) |
| Harpenden to Cayiralan | 1,917.98 mi (3,086.70 km) |
| Harpenden to Cayirhan | 1,719.39 mi (2,767.09 km) |
| Harpenden to Cayirli | 2,081.52 mi (3,349.89 km) |
| Harpenden to Cayirova | 1,593.25 mi (2,564.09 km) |
| Harpenden to Caykara | 2,051.64 mi (3,301.79 km) |
| Harpenden to Cekerek | 1,878.93 mi (3,023.84 km) |
| Harpenden to Cekme | 1,576.21 mi (2,536.67 km) |
| Harpenden to Celtik | 1,771.23 mi (2,850.52 km) |
| Harpenden to Cerkes | 1,739.06 mi (2,798.75 km) |
| Harpenden to Cerkezkoy | 1,517.52 mi (2,442.22 km) |
