| Hard to Delhi (California) | 5,822.67 mi (9,370.69 km) |
| Hard to Delray Beach (Florida) | 4,884.06 mi (7,860.13 km) |
| Hard to Deltona (Florida) | 4,815.62 mi (7,750.00 km) |
| Hard to Deming (New Mexico) | 5,701.65 mi (9,175.92 km) |
| Hard to Denison (Texas) | 5,208.54 mi (8,382.34 km) |
| Hard to Dent (Ohio) | 4,475.88 mi (7,203.23 km) |
| Hard to Denton (Texas) | 5,258.40 mi (8,462.57 km) |
| Hard to Dentsville (South Carolina) | 4,560.25 mi (7,339.02 km) |
| Hard to Denver (Colorado) | 5,195.47 mi (8,361.30 km) |
| Hard to Depew (New York) | 4,073.11 mi (6,555.04 km) |
| Hard to Derby (Connecticut) | 3,910.07 mi (6,292.64 km) |
| Hard to Derby (Kansas) | 5,040.37 mi (8,111.69 km) |
| Hard to Des Moines (Iowa) | 4,705.85 mi (7,573.33 km) |
| Hard to Des Moines (Washington) | 5,273.58 mi (8,487.01 km) |
| Hard to Des Plaines (Illinois) | 4,470.67 mi (7,194.85 km) |
