| Middlesex to Duluth (Minnesota) | 977.11 mi (1,572.50 km) |
| Middlesex to Dumas (Texas) | 1,519.37 mi (2,445.20 km) |
| Middlesex to Dumont (New Jersey) | 36.95 mi (59.47 km) |
| Middlesex to Duncan (Oklahoma) | 1,344.09 mi (2,163.10 km) |
| Middlesex to Duncanville (Texas) | 1,353.32 mi (2,177.97 km) |
| Middlesex to Dundalk (Maryland) | 138.81 mi (223.40 km) |
| Middlesex to Dunedin (Florida) | 986.01 mi (1,586.83 km) |
| Middlesex to Dunkirk (New York) | 282.41 mi (454.49 km) |
| Middlesex to Dunmore (Pennsylvania) | 81.87 mi (131.75 km) |
| Middlesex to Dunwoody (Georgia) | 707.08 mi (1,137.93 km) |
| Middlesex to Durango (Colorado) | 1,797.86 mi (2,893.38 km) |
| Middlesex to Durant (Oklahoma) | 1,282.19 mi (2,063.49 km) |
| Middlesex to Durham (North Carolina) | 397.10 mi (639.08 km) |
| Middlesex to Dyer (Indiana) | 680.28 mi (1,094.80 km) |
| Middlesex to Dyersburg (Tennessee) | 863.71 mi (1,390.00 km) |
