| Ironton to Hoddesdon | 3,907.68 mi (6,288.81 km) |
| Ironton to Holbeach | 3,882.68 mi (6,248.57 km) |
| Ironton to Holborn | 3,909.83 mi (6,292.26 km) |
| Ironton to Hollinwood | 3,781.73 mi (6,086.10 km) |
| Ironton to Holyhead | 3,688.97 mi (5,936.83 km) |
| Ironton to Holywell | 3,745.09 mi (6,027.14 km) |
| Ironton to Honiton | 3,803.12 mi (6,120.53 km) |
| Ironton to Horbury | 3,801.26 mi (6,117.54 km) |
| Ironton to Horley | 3,916.37 mi (6,302.78 km) |
| Ironton to Hornchurch | 3,921.93 mi (6,311.74 km) |
| Ironton to Horndean | 3,889.74 mi (6,259.94 km) |
| Ironton to Hornsey | 3,907.96 mi (6,289.25 km) |
| Ironton to Horsell | 3,896.76 mi (6,271.23 km) |
| Ironton to Horsforth | 3,793.88 mi (6,105.65 km) |
| Ironton to Horsham | 3,913.09 mi (6,297.50 km) |
