| Houghton Regis to Decatur (Georgia) | 4,177.04 mi (6,722.30 km) |
| Houghton Regis to Decatur (Illinois) | 4,065.19 mi (6,542.30 km) |
| Houghton Regis to Deer Park (New York) | 3,406.57 mi (5,482.34 km) |
| Houghton Regis to Deer Park (Texas) | 4,815.97 mi (7,750.55 km) |
| Houghton Regis to Deerfield (Illinois) | 3,914.83 mi (6,300.32 km) |
| Houghton Regis to Deerfield Beach (Florida) | 4,376.95 mi (7,044.02 km) |
| Houghton Regis to Defiance (Ohio) | 3,822.41 mi (6,151.58 km) |
| Houghton Regis to DeForest (Wisconsin) | 3,921.04 mi (6,310.30 km) |
| Houghton Regis to DeKalb (Illinois) | 3,959.61 mi (6,372.38 km) |
| Houghton Regis to Del Aire (California) | 5,421.35 mi (8,724.83 km) |
| Houghton Regis to Del City (Oklahoma) | 4,607.00 mi (7,414.25 km) |
| Houghton Regis to Del Rio (Texas) | 5,056.39 mi (8,137.48 km) |
| Houghton Regis to DeLand (Florida) | 4,288.56 mi (6,901.76 km) |
| Houghton Regis to Delano (California) | 5,343.28 mi (8,599.18 km) |
| Houghton Regis to Delaware (Ohio) | 3,817.95 mi (6,144.40 km) |
