| Southborough to Dallas (Texas) | 4,771.88 mi (7,679.60 km) |
| Southborough to Dalton (Georgia) | 4,204.96 mi (6,767.24 km) |
| Southborough to Daly City (California) | 5,389.74 mi (8,673.95 km) |
| Southborough to Damascus (Maryland) | 3,678.68 mi (5,920.26 km) |
| Southborough to Damascus (Oregon) | 4,941.60 mi (7,952.74 km) |
| Southborough to Dana Point (California) | 5,484.56 mi (8,826.55 km) |
| Southborough to Danbury (Connecticut) | 3,433.59 mi (5,525.83 km) |
| Southborough to Dania Beach (Florida) | 4,433.08 mi (7,134.35 km) |
| Southborough to Danville (California) | 5,367.68 mi (8,638.45 km) |
| Southborough to Danville (Illinois) | 4,053.94 mi (6,524.19 km) |
| Southborough to Danville (Indiana) | 4,028.78 mi (6,483.69 km) |
| Southborough to Danville (Kentucky) | 4,060.02 mi (6,533.97 km) |
| Southborough to Danville (Virginia) | 3,891.67 mi (6,263.04 km) |
| Southborough to Daphne (Alabama) | 4,527.53 mi (7,286.36 km) |
| Southborough to Darby (Pennsylvania) | 3,570.72 mi (5,746.51 km) |
