| Castle Rock to Hoddesdon | 4,693.49 mi (7,553.44 km) |
| Castle Rock to Holbeach | 4,652.00 mi (7,486.67 km) |
| Castle Rock to Holborn | 4,699.83 mi (7,563.65 km) |
| Castle Rock to Hollinwood | 4,550.43 mi (7,323.20 km) |
| Castle Rock to Holyhead | 4,472.94 mi (7,198.50 km) |
| Castle Rock to Holywell | 4,522.99 mi (7,279.05 km) |
| Castle Rock to Honiton | 4,620.07 mi (7,435.28 km) |
| Castle Rock to Horbury | 4,564.78 mi (7,346.30 km) |
| Castle Rock to Horley | 4,711.98 mi (7,583.20 km) |
| Castle Rock to Hornchurch | 4,709.65 mi (7,579.45 km) |
| Castle Rock to Horndean | 4,693.68 mi (7,553.74 km) |
| Castle Rock to Hornsey | 4,696.96 mi (7,559.03 km) |
| Castle Rock to Horsell | 4,692.07 mi (7,551.16 km) |
| Castle Rock to Horsforth | 4,554.91 mi (7,330.43 km) |
| Castle Rock to Horsham | 4,711.22 mi (7,581.97 km) |
