| Houghton Regis to Collegno | 599.18 mi (964.29 km) |
| Houghton Regis to Cologno al Serio | 637.45 mi (1,025.87 km) |
| Houghton Regis to Cologno Monzese | 626.46 mi (1,008.20 km) |
| Houghton Regis to Colorno | 693.00 mi (1,115.28 km) |
| Houghton Regis to Comacchio | 765.48 mi (1,231.92 km) |
| Houghton Regis to Comiso | 1,269.08 mi (2,042.39 km) |
| Houghton Regis to Como | 605.81 mi (974.95 km) |
| Houghton Regis to Concordia Sagittaria | 739.66 mi (1,190.38 km) |
| Houghton Regis to Concorezzo | 625.19 mi (1,006.15 km) |
| Houghton Regis to Conegliano | 713.95 mi (1,149.00 km) |
| Houghton Regis to Conselice | 762.53 mi (1,227.17 km) |
| Houghton Regis to Conselve | 728.65 mi (1,172.65 km) |
| Houghton Regis to Conversano | 1,124.51 mi (1,809.73 km) |
| Houghton Regis to Copertino | 1,193.18 mi (1,920.24 km) |
| Houghton Regis to Copparo | 743.58 mi (1,196.67 km) |
