| Gaithersburg to Heswall | 3,504.86 mi (5,640.53 km) |
| Gaithersburg to Hetton le Hole | 3,541.83 mi (5,700.03 km) |
| Gaithersburg to Hexham | 3,514.12 mi (5,655.43 km) |
| Gaithersburg to Heysham | 3,499.89 mi (5,632.52 km) |
| Gaithersburg to Heywood | 3,534.82 mi (5,688.75 km) |
| Gaithersburg to High Blantyre | 3,424.47 mi (5,511.15 km) |
| Gaithersburg to High Wycombe | 3,633.64 mi (5,847.77 km) |
| Gaithersburg to Highbury | 3,661.83 mi (5,893.14 km) |
| Gaithersburg to Highgate | 3,659.45 mi (5,889.31 km) |
| Gaithersburg to Hilsea | 3,637.94 mi (5,854.69 km) |
| Gaithersburg to Hinckley | 3,589.15 mi (5,776.18 km) |
| Gaithersburg to Hindley | 3,522.15 mi (5,668.35 km) |
| Gaithersburg to Hipperholme | 3,548.27 mi (5,710.38 km) |
| Gaithersburg to Hitchin | 3,645.59 mi (5,867.01 km) |
| Gaithersburg to Hockley | 3,690.49 mi (5,939.27 km) |
