| Houghton Regis to Cadiz | 1,098.81 mi (1,768.37 km) |
| Houghton Regis to Calafell | 746.12 mi (1,200.76 km) |
| Houghton Regis to Calahorra | 666.99 mi (1,073.41 km) |
| Houghton Regis to Calasparra | 946.44 mi (1,523.15 km) |
| Houghton Regis to Calatayud | 731.08 mi (1,176.55 km) |
| Houghton Regis to Caldas de Montbuy | 720.88 mi (1,160.14 km) |
| Houghton Regis to Caldas de Reyes | 745.80 mi (1,200.24 km) |
| Houghton Regis to Calella | 726.43 mi (1,169.07 km) |
| Houghton Regis to Callosa de Segura | 952.36 mi (1,532.67 km) |
| Houghton Regis to Calpe | 916.51 mi (1,474.98 km) |
| Houghton Regis to Calvia | 864.73 mi (1,391.65 km) |
| Houghton Regis to Camas | 1,037.16 mi (1,669.15 km) |
| Houghton Regis to Cambados | 755.92 mi (1,216.53 km) |
| Houghton Regis to Cambre | 697.07 mi (1,121.83 km) |
| Houghton Regis to Cambrils | 752.48 mi (1,210.99 km) |
