| Houghton Regis to Casamassima | 1,118.43 mi (1,799.94 km) |
| Houghton Regis to Casandrino | 1,030.45 mi (1,658.36 km) |
| Houghton Regis to Casapulla | 1,024.24 mi (1,648.36 km) |
| Houghton Regis to Casarano | 1,210.23 mi (1,947.68 km) |
| Houghton Regis to Casatenovo | 618.86 mi (995.97 km) |
| Houghton Regis to Casciana Terme | 774.98 mi (1,247.21 km) |
| Houghton Regis to Cascina | 764.40 mi (1,230.18 km) |
| Houghton Regis to Caselle Torinese | 595.65 mi (958.61 km) |
| Houghton Regis to Caserta | 1,025.85 mi (1,650.95 km) |
| Houghton Regis to Casier | 724.72 mi (1,166.33 km) |
| Houghton Regis to Casorate Primo | 629.18 mi (1,012.57 km) |
| Houghton Regis to Casoria | 1,033.87 mi (1,663.85 km) |
| Houghton Regis to Cassano al Ionio | 1,160.04 mi (1,866.91 km) |
| Houghton Regis to Cassano d'Adda | 633.96 mi (1,020.26 km) |
| Houghton Regis to Cassano delle Murge | 1,116.71 mi (1,797.17 km) |
