| Fallbrook to Duluth (Minnesota) | 1,606.36 mi (2,585.19 km) |
| Fallbrook to Dumas (Texas) | 883.76 mi (1,422.27 km) |
| Fallbrook to Dumont (New Jersey) | 2,412.08 mi (3,881.87 km) |
| Fallbrook to Duncan (Oklahoma) | 1,107.63 mi (1,782.56 km) |
| Fallbrook to Duncanville (Texas) | 1,176.18 mi (1,892.87 km) |
| Fallbrook to Dundalk (Maryland) | 2,284.28 mi (3,676.20 km) |
| Fallbrook to Dunedin (Florida) | 2,069.38 mi (3,330.34 km) |
| Fallbrook to Dunkirk (New York) | 2,139.20 mi (3,442.70 km) |
| Fallbrook to Dunmore (Pennsylvania) | 2,327.65 mi (3,745.99 km) |
| Fallbrook to Dunwoody (Georgia) | 1,885.17 mi (3,033.88 km) |
| Fallbrook to Durango (Colorado) | 591.39 mi (951.75 km) |
| Fallbrook to Durant (Oklahoma) | 1,196.54 mi (1,925.64 km) |
| Fallbrook to Durham (North Carolina) | 2,171.16 mi (3,494.14 km) |
| Fallbrook to Dyer (Indiana) | 1,714.34 mi (2,758.96 km) |
| Fallbrook to Dyersburg (Tennessee) | 1,587.09 mi (2,554.18 km) |
