| Southborough to Dumas (Texas) | 4,808.63 mi (7,738.75 km) |
| Southborough to Dumont (New Jersey) | 3,474.38 mi (5,591.47 km) |
| Southborough to Duncan (Oklahoma) | 4,726.23 mi (7,606.13 km) |
| Southborough to Duncanville (Texas) | 4,785.13 mi (7,700.93 km) |
| Southborough to Dundalk (Maryland) | 3,649.95 mi (5,874.03 km) |
| Southborough to Dunedin (Florida) | 4,445.44 mi (7,154.24 km) |
| Southborough to Dunkirk (New York) | 3,623.56 mi (5,831.55 km) |
| Southborough to Dunmore (Pennsylvania) | 3,520.06 mi (5,664.98 km) |
| Southborough to Dunwoody (Georgia) | 4,218.06 mi (6,788.31 km) |
| Southborough to Durango (Colorado) | 4,944.72 mi (7,957.76 km) |
| Southborough to Durant (Oklahoma) | 4,695.74 mi (7,557.07 km) |
| Southborough to Durham (North Carolina) | 3,898.83 mi (6,274.56 km) |
| Southborough to Dyer (Indiana) | 3,986.77 mi (6,416.09 km) |
| Southborough to Dyersburg (Tennessee) | 4,319.46 mi (6,951.49 km) |
| Southborough to Eagan (Minnesota) | 4,042.45 mi (6,505.69 km) |
