| Seaham to Hilliard (Ohio) | 3,726.83 mi (5,997.75 km) |
| Seaham to Hillsboro (Oregon) | 4,709.38 mi (7,579.01 km) |
| Seaham to Hillsborough (California) | 5,164.48 mi (8,311.43 km) |
| Seaham to Hillsborough (New Jersey) | 3,381.90 mi (5,442.65 km) |
| Seaham to Hilo (Hawaii) | 7,059.34 mi (11,360.91 km) |
| Seaham to Hilton Head Island (South Carolina) | 4,029.91 mi (6,485.51 km) |
| Seaham to Hinesville (Georgia) | 4,082.34 mi (6,569.90 km) |
| Seaham to Hinsdale (Illinois) | 3,815.06 mi (6,139.74 km) |
| Seaham to Hobart (Indiana) | 3,805.55 mi (6,124.43 km) |
| Seaham to Hobbs (New Mexico) | 4,833.34 mi (7,778.51 km) |
| Seaham to Hobe Sound (Florida) | 4,273.97 mi (6,878.29 km) |
| Seaham to Hoboken (New Jersey) | 3,346.71 mi (5,386.01 km) |
| Seaham to Hockessin (Delaware) | 3,455.73 mi (5,561.46 km) |
| Seaham to Hoffman Estates (Illinois) | 3,809.97 mi (6,131.56 km) |
| Seaham to Holbrook (New York) | 3,307.50 mi (5,322.91 km) |
