| Conwy to Hilliard (Ohio) | 3,668.99 mi (5,904.67 km) |
| Conwy to Hillsboro (Oregon) | 4,725.52 mi (7,604.98 km) |
| Conwy to Hillsborough (California) | 5,168.04 mi (8,317.16 km) |
| Conwy to Hillsborough (New Jersey) | 3,311.92 mi (5,330.02 km) |
| Conwy to Hilo (Hawaii) | 7,110.85 mi (11,443.81 km) |
| Conwy to Hilton Head Island (South Carolina) | 3,952.99 mi (6,361.72 km) |
| Conwy to Hinesville (Georgia) | 4,006.18 mi (6,447.32 km) |
| Conwy to Hinsdale (Illinois) | 3,768.44 mi (6,064.72 km) |
| Conwy to Hobart (Indiana) | 3,757.30 mi (6,046.78 km) |
| Conwy to Hobbs (New Mexico) | 4,795.14 mi (7,717.04 km) |
| Conwy to Hobe Sound (Florida) | 4,187.57 mi (6,739.24 km) |
| Conwy to Hoboken (New Jersey) | 3,276.31 mi (5,272.71 km) |
| Conwy to Hockessin (Delaware) | 3,385.72 mi (5,448.78 km) |
| Conwy to Hoffman Estates (Illinois) | 3,764.26 mi (6,058.00 km) |
| Conwy to Holbrook (New York) | 3,235.75 mi (5,207.44 km) |
