| Castle Rock to Horwich | 4,534.12 mi (7,296.95 km) |
| Castle Rock to Houghton le Spring | 4,521.58 mi (7,276.78 km) |
| Castle Rock to Houghton Regis | 4,670.00 mi (7,515.65 km) |
| Castle Rock to Hounslow | 4,692.95 mi (7,552.57 km) |
| Castle Rock to Hove | 4,725.74 mi (7,605.34 km) |
| Castle Rock to Hoyland Nether | 4,575.02 mi (7,362.78 km) |
| Castle Rock to Hucclecote | 4,614.59 mi (7,426.46 km) |
| Castle Rock to Huddersfield | 4,557.82 mi (7,335.09 km) |
| Castle Rock to Huntingdon | 4,664.59 mi (7,506.94 km) |
| Castle Rock to Huntington | 4,568.88 mi (7,352.91 km) |
| Castle Rock to Huyton | 4,530.85 mi (7,291.70 km) |
| Castle Rock to Hwlffordd | 4,517.73 mi (7,270.58 km) |
| Castle Rock to Hyde | 4,555.29 mi (7,331.04 km) |
| Castle Rock to Hythe | 4,681.24 mi (7,533.72 km) |
| Castle Rock to Hythe | 4,759.85 mi (7,660.23 km) |
