| Houghton Regis to Castle Rock (Colorado) | 4,670.00 mi (7,515.65 km) |
| Houghton Regis to Castro Valley (California) | 5,315.76 mi (8,554.89 km) |
| Houghton Regis to Catalina Foothills (Arizona) | 5,262.40 mi (8,469.01 km) |
| Houghton Regis to Cataño (Puerto Rico) | 4,188.83 mi (6,741.27 km) |
| Houghton Regis to Cathedral City (California) | 5,364.49 mi (8,633.31 km) |
| Houghton Regis to Catonsville (Maryland) | 3,611.81 mi (5,812.65 km) |
| Houghton Regis to Cave Spring (Virginia) | 3,837.78 mi (6,176.32 km) |
| Houghton Regis to Cayce (South Carolina) | 4,036.05 mi (6,495.39 km) |
| Houghton Regis to Cayey (Puerto Rico) | 4,206.68 mi (6,770.00 km) |
| Houghton Regis to Cedar City (Utah) | 5,038.47 mi (8,108.63 km) |
| Houghton Regis to Cedar Falls (Iowa) | 4,069.45 mi (6,549.15 km) |
| Houghton Regis to Cedar Hill (Texas) | 4,737.07 mi (7,623.58 km) |
| Houghton Regis to Cedar Lake (Indiana) | 3,936.38 mi (6,335.00 km) |
| Houghton Regis to Cedar Mill (Oregon) | 4,883.39 mi (7,859.06 km) |
| Houghton Regis to Cedar Park (Texas) | 4,878.45 mi (7,851.11 km) |
