| Castricum to Hilliard (Ohio) | 4,014.75 mi (6,461.11 km) |
| Castricum to Hillsboro (Oregon) | 4,984.90 mi (8,022.43 km) |
| Castricum to Hillsborough (California) | 5,446.94 mi (8,766.00 km) |
| Castricum to Hillsborough (New Jersey) | 3,664.26 mi (5,897.05 km) |
| Castricum to Hilo (Hawaii) | 7,299.39 mi (11,747.23 km) |
| Castricum to Hilton Head Island (South Carolina) | 4,308.09 mi (6,933.20 km) |
| Castricum to Hinesville (Georgia) | 4,361.05 mi (7,018.43 km) |
| Castricum to Hinsdale (Illinois) | 4,105.98 mi (6,607.94 km) |
| Castricum to Hobart (Indiana) | 4,096.15 mi (6,592.12 km) |
| Castricum to Hobbs (New Mexico) | 5,125.35 mi (8,248.45 km) |
| Castricum to Hobe Sound (Florida) | 4,544.70 mi (7,313.98 km) |
| Castricum to Hoboken (New Jersey) | 3,628.82 mi (5,840.03 km) |
| Castricum to Hockessin (Delaware) | 3,738.09 mi (6,015.87 km) |
| Castricum to Hoffman Estates (Illinois) | 4,101.05 mi (6,600.01 km) |
| Castricum to Holbrook (New York) | 3,588.83 mi (5,775.67 km) |
