| Southborough to Dixon (Illinois) | 4,045.72 mi (6,510.96 km) |
| Southborough to Dobbs Ferry (New York) | 3,466.47 mi (5,578.74 km) |
| Southborough to Doctor Phillips (Florida) | 4,370.18 mi (7,033.12 km) |
| Southborough to Dodge City (Kansas) | 4,639.00 mi (7,465.74 km) |
| Southborough to Dolton (Illinois) | 3,984.12 mi (6,411.83 km) |
| Southborough to Donna (Texas) | 5,169.92 mi (8,320.18 km) |
| Southborough to Dorado (Puerto Rico) | 4,220.41 mi (6,792.09 km) |
| Southborough to Doral (Florida) | 4,453.57 mi (7,167.33 km) |
| Southborough to Doraville (Georgia) | 4,218.05 mi (6,788.29 km) |
| Southborough to Dothan (Alabama) | 4,395.60 mi (7,074.04 km) |
| Southborough to Douglas (Arizona) | 5,324.43 mi (8,568.84 km) |
| Southborough to Douglas (Georgia) | 4,276.46 mi (6,882.30 km) |
| Southborough to Douglasville (Georgia) | 4,244.00 mi (6,830.05 km) |
| Southborough to Dover (Delaware) | 3,614.80 mi (5,817.46 km) |
| Southborough to Dover (New Hampshire) | 3,253.76 mi (5,236.43 km) |
