| Middletown to Duluth (Minnesota) | 636.56 mi (1,024.44 km) |
| Middletown to Dumas (Texas) | 992.84 mi (1,597.82 km) |
| Middletown to Dumont (New Jersey) | 555.89 mi (894.63 km) |
| Middletown to Duncan (Oklahoma) | 821.49 mi (1,322.07 km) |
| Middletown to Duncanville (Texas) | 844.52 mi (1,359.13 km) |
| Middletown to Dundalk (Maryland) | 420.53 mi (676.78 km) |
| Middletown to Dunedin (Florida) | 797.66 mi (1,283.72 km) |
| Middletown to Dunkirk (New York) | 333.38 mi (536.53 km) |
| Middletown to Dunmore (Pennsylvania) | 478.78 mi (770.52 km) |
| Middletown to Dunwoody (Georgia) | 384.27 mi (618.43 km) |
| Middletown to Durango (Colorado) | 1,279.07 mi (2,058.47 km) |
| Middletown to Durant (Oklahoma) | 765.93 mi (1,232.65 km) |
| Middletown to Durham (North Carolina) | 385.10 mi (619.76 km) |
| Middletown to Dyer (Indiana) | 215.05 mi (346.09 km) |
| Middletown to Dyersburg (Tennessee) | 363.15 mi (584.44 km) |
