| Valley Center to Duluth (Minnesota) | 1,603.87 mi (2,581.18 km) |
| Valley Center to Dumas (Texas) | 874.66 mi (1,407.63 km) |
| Valley Center to Dumont (New Jersey) | 2,405.16 mi (3,870.72 km) |
| Valley Center to Duncan (Oklahoma) | 1,097.28 mi (1,765.90 km) |
| Valley Center to Duncanville (Texas) | 1,164.62 mi (1,874.27 km) |
| Valley Center to Dundalk (Maryland) | 2,276.63 mi (3,663.87 km) |
| Valley Center to Dunedin (Florida) | 2,057.11 mi (3,310.59 km) |
| Valley Center to Dunkirk (New York) | 2,133.00 mi (3,432.74 km) |
| Valley Center to Dunmore (Pennsylvania) | 2,320.92 mi (3,735.16 km) |
| Valley Center to Dunwoody (Georgia) | 1,874.97 mi (3,017.46 km) |
| Valley Center to Durango (Colorado) | 585.68 mi (942.56 km) |
| Valley Center to Durant (Oklahoma) | 1,185.84 mi (1,908.43 km) |
| Valley Center to Durham (North Carolina) | 2,162.05 mi (3,479.49 km) |
| Valley Center to Dyer (Indiana) | 1,708.03 mi (2,748.81 km) |
| Valley Center to Dyersburg (Tennessee) | 1,577.75 mi (2,539.15 km) |
