| Houghton Regis to Camardi | 1,964.61 mi (3,161.73 km) |
| Houghton Regis to Camas | 1,937.47 mi (3,118.06 km) |
| Houghton Regis to Camliyayla | 1,979.64 mi (3,185.91 km) |
| Houghton Regis to Camoluk | 2,020.88 mi (3,252.28 km) |
| Houghton Regis to Can | 1,543.62 mi (2,484.22 km) |
| Houghton Regis to Canakkale | 1,512.48 mi (2,434.10 km) |
| Houghton Regis to Cankaya | 1,785.21 mi (2,873.03 km) |
| Houghton Regis to Cankiri | 1,786.89 mi (2,875.72 km) |
| Houghton Regis to Cardak | 1,750.57 mi (2,817.26 km) |
| Houghton Regis to Carsamba | 1,892.56 mi (3,045.79 km) |
| Houghton Regis to Carsibasi | 2,009.60 mi (3,234.13 km) |
| Houghton Regis to Cat | 2,137.59 mi (3,440.11 km) |
| Houghton Regis to Catalagzi | 1,676.48 mi (2,698.04 km) |
| Houghton Regis to Catalca | 1,551.26 mi (2,496.51 km) |
| Houghton Regis to Catalpinar | 1,936.17 mi (3,115.97 km) |
