| Houghton Regis to Dallas (Texas) | 4,718.66 mi (7,593.94 km) |
| Houghton Regis to Dalton (Georgia) | 4,155.51 mi (6,687.65 km) |
| Houghton Regis to Daly City (California) | 5,329.02 mi (8,576.24 km) |
| Houghton Regis to Damascus (Maryland) | 3,629.92 mi (5,841.79 km) |
| Houghton Regis to Damascus (Oregon) | 4,880.27 mi (7,854.03 km) |
| Houghton Regis to Dana Point (California) | 5,425.18 mi (8,730.98 km) |
| Houghton Regis to Danbury (Connecticut) | 3,384.96 mi (5,447.56 km) |
| Houghton Regis to Dania Beach (Florida) | 4,390.94 mi (7,066.53 km) |
| Houghton Regis to Danville (California) | 5,307.02 mi (8,540.82 km) |
| Houghton Regis to Danville (Illinois) | 4,000.81 mi (6,438.69 km) |
| Houghton Regis to Danville (Indiana) | 3,976.21 mi (6,399.09 km) |
| Houghton Regis to Danville (Kentucky) | 4,009.15 mi (6,452.10 km) |
| Houghton Regis to Danville (Virginia) | 3,843.61 mi (6,185.69 km) |
| Houghton Regis to Daphne (Alabama) | 4,478.91 mi (7,208.12 km) |
| Houghton Regis to Darby (Pennsylvania) | 3,522.34 mi (5,668.66 km) |
