| Southborough to Hilliard (Ohio) | 3,884.30 mi (6,251.17 km) |
| Southborough to Hillsboro (Oregon) | 4,948.86 mi (7,964.42 km) |
| Southborough to Hillsborough (California) | 5,394.00 mi (8,680.80 km) |
| Southborough to Hillsborough (New Jersey) | 3,520.28 mi (5,665.34 km) |
| Southborough to Hilo (Hawaii) | 7,318.26 mi (11,777.61 km) |
| Southborough to Hilton Head Island (South Carolina) | 4,155.53 mi (6,687.68 km) |
| Southborough to Hinesville (Georgia) | 4,209.27 mi (6,774.16 km) |
| Southborough to Hinsdale (Illinois) | 3,988.73 mi (6,419.25 km) |
| Southborough to Hobart (Indiana) | 3,976.95 mi (6,400.29 km) |
| Southborough to Hobbs (New Mexico) | 5,017.92 mi (8,075.56 km) |
| Southborough to Hobe Sound (Florida) | 4,381.44 mi (7,051.25 km) |
| Southborough to Hoboken (New Jersey) | 3,484.42 mi (5,607.64 km) |
| Southborough to Hockessin (Delaware) | 3,593.98 mi (5,783.95 km) |
| Southborough to Hoffman Estates (Illinois) | 3,984.90 mi (6,413.07 km) |
| Southborough to Holbrook (New York) | 3,442.98 mi (5,540.93 km) |
