| Southborough to Dardenne Prairie (Missouri) | 4,240.54 mi (6,824.49 km) |
| Southborough to Darien (Illinois) | 3,993.42 mi (6,426.80 km) |
| Southborough to Davenport (Iowa) | 4,101.76 mi (6,601.15 km) |
| Southborough to Davidson (North Carolina) | 4,001.30 mi (6,439.48 km) |
| Southborough to Davie (Florida) | 4,437.35 mi (7,141.23 km) |
| Southborough to Davis (California) | 5,317.73 mi (8,558.05 km) |
| Southborough to Dayton (Nevada) | 5,212.55 mi (8,388.79 km) |
| Southborough to Dayton (Ohio) | 3,937.28 mi (6,336.43 km) |
| Southborough to Daytona Beach (Florida) | 4,316.33 mi (6,946.46 km) |
| Southborough to De Pere (Wisconsin) | 3,873.92 mi (6,234.47 km) |
| Southborough to De Witt (New York) | 3,470.51 mi (5,585.25 km) |
| Southborough to Dearborn (Michigan) | 3,783.51 mi (6,088.97 km) |
| Southborough to Dearborn Heights (Michigan) | 3,785.83 mi (6,092.71 km) |
| Southborough to DeBary (Florida) | 4,341.58 mi (6,987.10 km) |
| Southborough to Decatur (Alabama) | 4,296.13 mi (6,913.95 km) |
