| Boone to Dover (New Jersey) | 501.51 mi (807.10 km) |
| Boone to Dover (Ohio) | 298.61 mi (480.56 km) |
| Boone to Downers Grove (Illinois) | 514.57 mi (828.12 km) |
| Boone to Downey (California) | 2,055.80 mi (3,308.49 km) |
| Boone to Dranesville (Virginia) | 303.83 mi (488.97 km) |
| Boone to Draper (Utah) | 1,654.17 mi (2,662.13 km) |
| Boone to Drexel Heights (Arizona) | 1,696.11 mi (2,729.63 km) |
| Boone to Drexel Hill (Pennsylvania) | 431.64 mi (694.66 km) |
| Boone to Duarte (California) | 2,041.88 mi (3,286.08 km) |
| Boone to Dublin (California) | 2,206.22 mi (3,550.58 km) |
| Boone to Dublin (Georgia) | 263.90 mi (424.71 km) |
| Boone to Dublin (Ohio) | 281.17 mi (452.51 km) |
| Boone to Dubuque (Iowa) | 648.98 mi (1,044.43 km) |
| Boone to Duluth (Georgia) | 207.14 mi (333.36 km) |
| Boone to Duluth (Minnesota) | 907.41 mi (1,460.34 km) |
