| Katy to Hoddesdon | 4,862.94 mi (7,826.15 km) |
| Katy to Holbeach | 4,835.45 mi (7,781.90 km) |
| Katy to Holborn | 4,865.66 mi (7,830.52 km) |
| Katy to Hollinwood | 4,733.94 mi (7,618.54 km) |
| Katy to Holyhead | 4,643.08 mi (7,472.32 km) |
| Katy to Holywell | 4,698.55 mi (7,561.59 km) |
| Katy to Honiton | 4,761.79 mi (7,663.35 km) |
| Katy to Horbury | 4,752.74 mi (7,648.79 km) |
| Katy to Horley | 4,872.94 mi (7,842.24 km) |
| Katy to Hornchurch | 4,877.50 mi (7,849.58 km) |
| Katy to Horndean | 4,847.23 mi (7,800.87 km) |
| Katy to Hornsey | 4,863.65 mi (7,827.28 km) |
| Katy to Horsell | 4,853.22 mi (7,810.51 km) |
| Katy to Horsforth | 4,744.91 mi (7,636.20 km) |
| Katy to Horsham | 4,869.96 mi (7,837.44 km) |
