| Irondale to Hoddesdon | 4,307.44 mi (6,932.16 km) |
| Irondale to Holbeach | 4,284.20 mi (6,894.75 km) |
| Irondale to Holborn | 4,309.13 mi (6,934.88 km) |
| Irondale to Hollinwood | 4,183.66 mi (6,732.95 km) |
| Irondale to Holyhead | 4,089.77 mi (6,581.85 km) |
| Irondale to Holywell | 4,146.28 mi (6,672.79 km) |
| Irondale to Honiton | 4,199.71 mi (6,758.78 km) |
| Irondale to Horbury | 4,203.60 mi (6,765.04 km) |
| Irondale to Horley | 4,315.02 mi (6,944.35 km) |
| Irondale to Hornchurch | 4,321.43 mi (6,954.68 km) |
| Irondale to Horndean | 4,287.55 mi (6,900.14 km) |
| Irondale to Hornsey | 4,307.37 mi (6,932.05 km) |
| Irondale to Horsell | 4,295.52 mi (6,912.98 km) |
| Irondale to Horsforth | 4,196.47 mi (6,753.56 km) |
| Irondale to Horsham | 4,311.47 mi (6,938.63 km) |
