| Middlesex to Hillcrest Heights (Maryland) | 177.60 mi (285.82 km) |
| Middlesex to Hilliard (Ohio) | 457.47 mi (736.22 km) |
| Middlesex to Hillsboro (Oregon) | 2,431.77 mi (3,913.56 km) |
| Middlesex to Hillsborough (California) | 2,544.19 mi (4,094.48 km) |
| Middlesex to Hillsborough (New Jersey) | 9.21 mi (14.82 km) |
| Middlesex to Hilo (Hawaii) | 4,861.36 mi (7,823.61 km) |
| Middlesex to Hilton Head Island (South Carolina) | 675.16 mi (1,086.56 km) |
| Middlesex to Hinesville (Georgia) | 722.40 mi (1,162.59 km) |
| Middlesex to Hinsdale (Illinois) | 702.51 mi (1,130.58 km) |
| Middlesex to Hobart (Indiana) | 668.09 mi (1,075.18 km) |
| Middlesex to Hobbs (New Mexico) | 1,669.77 mi (2,687.24 km) |
| Middlesex to Hobe Sound (Florida) | 986.87 mi (1,588.22 km) |
| Middlesex to Hoboken (New Jersey) | 27.46 mi (44.19 km) |
| Middlesex to Hockessin (Delaware) | 82.87 mi (133.36 km) |
| Middlesex to Hoffman Estates (Illinois) | 714.75 mi (1,150.29 km) |
