| Gaithersburg to Hohenhameln | 4,045.94 mi (6,511.31 km) |
| Gaithersburg to Hohenkirchen-Siegertsbrunn | 4,242.31 mi (6,827.34 km) |
| Gaithersburg to Hohenmolsen | 4,157.37 mi (6,690.64 km) |
| Gaithersburg to Hohenstein-Ernstthal | 4,192.51 mi (6,747.19 km) |
| Gaithersburg to Hohr-Grenzhausen | 4,004.21 mi (6,444.15 km) |
| Gaithersburg to Holzgerlingen | 4,111.37 mi (6,616.61 km) |
| Gaithersburg to Holzkirchen | 4,245.28 mi (6,832.11 km) |
| Gaithersburg to Holzminden | 4,034.48 mi (6,492.87 km) |
| Gaithersburg to Holzwickede | 3,972.15 mi (6,392.56 km) |
| Gaithersburg to Homburg | 4,022.57 mi (6,473.70 km) |
| Gaithersburg to Hoppegarten | 4,174.86 mi (6,718.79 km) |
| Gaithersburg to Horb am Neckar | 4,104.11 mi (6,604.92 km) |
| Gaithersburg to Horn-Bad Meinberg | 4,014.24 mi (6,460.29 km) |
| Gaithersburg to Horstel | 3,949.08 mi (6,355.43 km) |
| Gaithersburg to Hosbach | 4,078.17 mi (6,563.18 km) |
