| Houghton Regis to Cavdir | 1,783.42 mi (2,870.14 km) |
| Houghton Regis to Cay | 1,768.70 mi (2,846.45 km) |
| Houghton Regis to Caybasi | 1,914.99 mi (3,081.89 km) |
| Houghton Regis to Caycuma | 1,688.20 mi (2,716.89 km) |
| Houghton Regis to Cayeli | 2,066.29 mi (3,325.36 km) |
| Houghton Regis to Cayiralan | 1,926.45 mi (3,100.32 km) |
| Houghton Regis to Cayirhan | 1,728.06 mi (2,781.04 km) |
| Houghton Regis to Cayirli | 2,089.58 mi (3,362.85 km) |
| Houghton Regis to Cayirova | 1,602.01 mi (2,578.18 km) |
| Houghton Regis to Caykara | 2,059.54 mi (3,314.51 km) |
| Houghton Regis to Cekerek | 1,887.31 mi (3,037.32 km) |
| Houghton Regis to Cekme | 1,584.96 mi (2,550.74 km) |
| Houghton Regis to Celtik | 1,780.02 mi (2,864.66 km) |
| Houghton Regis to Cerkes | 1,747.55 mi (2,812.40 km) |
| Houghton Regis to Cerkezkoy | 1,526.33 mi (2,456.38 km) |
