| Potomac to Haaren | 3,936.96 mi (6,335.93 km) |
| Potomac to Hadamar | 4,023.75 mi (6,475.59 km) |
| Potomac to Hagen | 3,975.46 mi (6,397.89 km) |
| Potomac to Hagen im Bremischen | 3,966.07 mi (6,382.78 km) |
| Potomac to Hagenow | 4,060.02 mi (6,533.97 km) |
| Potomac to Haiger | 4,021.57 mi (6,472.09 km) |
| Potomac to Haigerloch | 4,115.79 mi (6,623.73 km) |
| Potomac to Hainichen | 4,208.02 mi (6,772.15 km) |
| Potomac to Halberstadt | 4,099.39 mi (6,597.33 km) |
| Potomac to Haldensleben | 4,102.06 mi (6,601.63 km) |
| Potomac to Hallbergmoos | 4,237.43 mi (6,819.49 km) |
| Potomac to Halle | 3,990.76 mi (6,422.51 km) |
| Potomac to Halle | 4,147.41 mi (6,674.61 km) |
| Potomac to Halle-Neustadt | 4,145.67 mi (6,671.81 km) |
| Potomac to Hallstadt | 4,152.27 mi (6,682.43 km) |
