| London Colney to Hoddesdon | 12.40 mi (19.96 km) |
| London Colney to Holbeach | 75.65 mi (121.74 km) |
| London Colney to Holborn | 16.30 mi (26.23 km) |
| London Colney to Hollinwood | 145.99 mi (234.96 km) |
| London Colney to Holyhead | 212.44 mi (341.88 km) |
| London Colney to Holywell | 162.93 mi (262.22 km) |
| London Colney to Honiton | 140.36 mi (225.89 km) |
| London Colney to Horbury | 143.58 mi (231.06 km) |
| London Colney to Horley | 38.54 mi (62.02 km) |
| London Colney to Hornchurch | 24.91 mi (40.09 km) |
| London Colney to Horndean | 63.67 mi (102.47 km) |
| London Colney to Hornsey | 12.37 mi (19.91 km) |
| London Colney to Horsell | 29.67 mi (47.75 km) |
| London Colney to Horsforth | 156.27 mi (251.50 km) |
| London Colney to Horsham | 45.89 mi (73.85 km) |
