| Southborough to Decatur (Georgia) | 4,225.67 mi (6,800.57 km) |
| Southborough to Decatur (Illinois) | 4,118.63 mi (6,628.29 km) |
| Southborough to Deer Park (New York) | 3,454.70 mi (5,559.80 km) |
| Southborough to Deer Park (Texas) | 4,867.30 mi (7,833.16 km) |
| Southborough to Deerfield (Illinois) | 3,968.97 mi (6,387.44 km) |
| Southborough to Deerfield Beach (Florida) | 4,419.22 mi (7,112.05 km) |
| Southborough to Defiance (Ohio) | 3,875.00 mi (6,236.21 km) |
| Southborough to DeForest (Wisconsin) | 3,976.08 mi (6,398.88 km) |
| Southborough to DeKalb (Illinois) | 4,013.91 mi (6,459.77 km) |
| Southborough to Del Aire (California) | 5,480.94 mi (8,820.72 km) |
| Southborough to Del City (Oklahoma) | 4,661.46 mi (7,501.89 km) |
| Southborough to Del Rio (Texas) | 5,109.87 mi (8,223.55 km) |
| Southborough to DeLand (Florida) | 4,333.06 mi (6,973.39 km) |
| Southborough to Delano (California) | 5,403.30 mi (8,695.77 km) |
| Southborough to Delaware (Ohio) | 3,869.57 mi (6,227.48 km) |
