| Fallbrook to Darby (Pennsylvania) | 2,347.90 mi (3,778.58 km) |
| Fallbrook to Dardenne Prairie (Missouri) | 1,520.00 mi (2,446.20 km) |
| Fallbrook to Darien (Illinois) | 1,693.19 mi (2,724.93 km) |
| Fallbrook to Davenport (Iowa) | 1,557.90 mi (2,507.20 km) |
| Fallbrook to Davidson (North Carolina) | 2,068.00 mi (3,328.12 km) |
| Fallbrook to Davie (Florida) | 2,260.53 mi (3,637.97 km) |
| Fallbrook to Davis (California) | 438.08 mi (705.02 km) |
| Fallbrook to Dayton (Nevada) | 427.24 mi (687.58 km) |
| Fallbrook to Dayton (Ohio) | 1,873.87 mi (3,015.70 km) |
| Fallbrook to Daytona Beach (Florida) | 2,141.90 mi (3,447.05 km) |
| Fallbrook to De Pere (Wisconsin) | 1,731.12 mi (2,785.97 km) |
| Fallbrook to De Witt (New York) | 2,306.16 mi (3,711.41 km) |
| Fallbrook to Dearborn (Michigan) | 1,941.05 mi (3,123.82 km) |
| Fallbrook to Dearborn Heights (Michigan) | 1,937.84 mi (3,118.66 km) |
| Fallbrook to DeBary (Florida) | 2,135.41 mi (3,436.61 km) |
