| Hard to Decatur (Georgia) | 4,714.94 mi (7,587.97 km) |
| Hard to Decatur (Illinois) | 4,612.50 mi (7,423.11 km) |
| Hard to Deer Park (New York) | 3,943.36 mi (6,346.22 km) |
| Hard to Deer Park (Texas) | 5,360.12 mi (8,626.27 km) |
| Hard to Deerfield (Illinois) | 4,462.73 mi (7,182.08 km) |
| Hard to Deerfield Beach (Florida) | 4,892.94 mi (7,874.43 km) |
| Hard to Defiance (Ohio) | 4,368.70 mi (7,030.75 km) |
| Hard to DeForest (Wisconsin) | 4,469.29 mi (7,192.63 km) |
| Hard to DeKalb (Illinois) | 4,507.61 mi (7,254.30 km) |
| Hard to Del Aire (California) | 5,958.40 mi (9,589.12 km) |
| Hard to Del City (Oklahoma) | 5,155.09 mi (8,296.31 km) |
| Hard to Del Rio (Texas) | 5,603.75 mi (9,018.36 km) |
| Hard to DeLand (Florida) | 4,813.21 mi (7,746.11 km) |
| Hard to Delano (California) | 5,876.96 mi (9,458.05 km) |
| Hard to Delaware (Ohio) | 4,362.71 mi (7,021.10 km) |
