| Southborough to Hormigueros (Puerto Rico) | 4,273.69 mi (6,877.85 km) |
| Southborough to Horn Lake (Mississippi) | 4,399.86 mi (7,080.88 km) |
| Southborough to Hot Springs (Arkansas) | 4,540.98 mi (7,308.00 km) |
| Southborough to Hot Springs Village (Arkansas) | 4,529.22 mi (7,289.08 km) |
| Southborough to Houma (Louisiana) | 4,695.60 mi (7,556.83 km) |
| Southborough to Houston (Texas) | 4,873.18 mi (7,842.63 km) |
| Southborough to Howard (Wisconsin) | 3,868.14 mi (6,225.17 km) |
| Southborough to Huber Heights (Ohio) | 3,930.18 mi (6,325.02 km) |
| Southborough to Hudson (Florida) | 4,425.06 mi (7,121.44 km) |
| Southborough to Hudson (Ohio) | 3,761.77 mi (6,053.98 km) |
| Southborough to Hudson (Wisconsin) | 4,019.99 mi (6,469.55 km) |
| Southborough to Hueytown (Alabama) | 4,353.66 mi (7,006.55 km) |
| Southborough to Hugo (Minnesota) | 4,018.69 mi (6,467.46 km) |
| Southborough to Humacao (Puerto Rico) | 4,217.30 mi (6,787.08 km) |
| Southborough to Humble (Texas) | 4,857.64 mi (7,817.61 km) |
