| Middlesex to Delaware (Ohio) | 451.15 mi (726.06 km) |
| Middlesex to Delhi (California) | 2,465.57 mi (3,967.96 km) |
| Middlesex to Delray Beach (Florida) | 1,026.71 mi (1,652.33 km) |
| Middlesex to Deltona (Florida) | 891.10 mi (1,434.08 km) |
| Middlesex to Deming (New Mexico) | 1,922.86 mi (3,094.55 km) |
| Middlesex to Denison (Texas) | 1,299.03 mi (2,090.59 km) |
| Middlesex to Dent (Ohio) | 546.71 mi (879.84 km) |
| Middlesex to Denton (Texas) | 1,345.46 mi (2,165.31 km) |
| Middlesex to Dentsville (South Carolina) | 571.79 mi (920.21 km) |
| Middlesex to Denver (Colorado) | 1,596.73 mi (2,569.70 km) |
| Middlesex to Depew (New York) | 270.19 mi (434.83 km) |
| Middlesex to Derby (Connecticut) | 90.41 mi (145.50 km) |
| Middlesex to Derby (Kansas) | 1,234.74 mi (1,987.13 km) |
| Middlesex to Des Moines (Iowa) | 995.70 mi (1,602.43 km) |
| Middlesex to Des Moines (Washington) | 2,384.40 mi (3,837.33 km) |
