| Fallbrook to Dover (New Hampshire) | 2,568.45 mi (4,133.51 km) |
| Fallbrook to Dover (New Jersey) | 2,382.57 mi (3,834.38 km) |
| Fallbrook to Dover (Ohio) | 2,019.94 mi (3,250.77 km) |
| Fallbrook to Downers Grove (Illinois) | 1,692.05 mi (2,723.09 km) |
| Fallbrook to Downey (California) | 65.22 mi (104.96 km) |
| Fallbrook to Dranesville (Virginia) | 2,238.30 mi (3,602.19 km) |
| Fallbrook to Draper (Utah) | 574.39 mi (924.39 km) |
| Fallbrook to Drexel Heights (Arizona) | 368.73 mi (593.42 km) |
| Fallbrook to Drexel Hill (Pennsylvania) | 2,345.55 mi (3,774.81 km) |
| Fallbrook to Duarte (California) | 68.73 mi (110.61 km) |
| Fallbrook to Dublin (California) | 398.81 mi (641.82 km) |
| Fallbrook to Dublin (Georgia) | 1,980.31 mi (3,187.00 km) |
| Fallbrook to Dublin (Ohio) | 1,930.91 mi (3,107.49 km) |
| Fallbrook to Dubuque (Iowa) | 1,568.34 mi (2,524.00 km) |
| Fallbrook to Duluth (Georgia) | 1,893.79 mi (3,047.77 km) |
