| Rockville to Hoddesdon | 3,660.54 mi (5,891.06 km) |
| Rockville to Holbeach | 3,639.18 mi (5,856.70 km) |
| Rockville to Holborn | 3,661.80 mi (5,893.10 km) |
| Rockville to Hollinwood | 3,539.25 mi (5,695.87 km) |
| Rockville to Holyhead | 3,444.08 mi (5,542.71 km) |
| Rockville to Holywell | 3,500.98 mi (5,634.29 km) |
| Rockville to Honiton | 3,550.39 mi (5,713.80 km) |
| Rockville to Horbury | 3,559.71 mi (5,728.80 km) |
| Rockville to Horley | 3,667.13 mi (5,901.68 km) |
| Rockville to Hornchurch | 3,674.28 mi (5,913.18 km) |
| Rockville to Horndean | 3,639.01 mi (5,856.42 km) |
| Rockville to Hornsey | 3,660.15 mi (5,890.44 km) |
| Rockville to Horsell | 3,647.74 mi (5,870.47 km) |
| Rockville to Horsforth | 3,552.92 mi (5,717.88 km) |
| Rockville to Horsham | 3,663.36 mi (5,895.61 km) |
