| London Colney to Hanahan (South Carolina) | 4,054.91 mi (6,525.75 km) |
| London Colney to Hanford (California) | 5,338.54 mi (8,591.55 km) |
| London Colney to Hannibal (Missouri) | 4,179.91 mi (6,726.91 km) |
| London Colney to Hanover (Pennsylvania) | 3,610.01 mi (5,809.75 km) |
| London Colney to Hanover Park (Illinois) | 3,948.70 mi (6,354.81 km) |
| London Colney to Happy Valley (Oregon) | 4,896.88 mi (7,880.76 km) |
| London Colney to Harker Heights (Texas) | 4,856.94 mi (7,816.48 km) |
| London Colney to Harlingen (Texas) | 5,115.78 mi (8,233.05 km) |
| London Colney to Harper Woods (Michigan) | 3,728.00 mi (5,999.64 km) |
| London Colney to Harrisburg (North Carolina) | 3,967.07 mi (6,384.38 km) |
| London Colney to Harrisburg (Pennsylvania) | 3,585.34 mi (5,770.05 km) |
| London Colney to Harrison (Arkansas) | 4,416.70 mi (7,107.99 km) |
| London Colney to Harrison (New Jersey) | 3,454.11 mi (5,558.85 km) |
| London Colney to Harrison (New York) | 3,424.30 mi (5,510.88 km) |
| London Colney to Harrison (Ohio) | 3,946.62 mi (6,351.47 km) |
