| Potomac to Harsewinkel | 3,988.33 mi (6,418.59 km) |
| Potomac to Harsum | 4,048.50 mi (6,515.44 km) |
| Potomac to Hasbergen | 3,969.13 mi (6,387.70 km) |
| Potomac to Haselunne | 3,939.53 mi (6,340.06 km) |
| Potomac to Hassfurt | 4,134.45 mi (6,653.75 km) |
| Potomac to Hassloch | 4,063.66 mi (6,539.83 km) |
| Potomac to Hatten | 3,963.01 mi (6,377.86 km) |
| Potomac to Hattersheim | 4,052.15 mi (6,521.30 km) |
| Potomac to Hattingen | 3,962.80 mi (6,377.51 km) |
| Potomac to Hauzenberg | 4,303.13 mi (6,925.21 km) |
| Potomac to Havixbeck | 3,956.13 mi (6,366.77 km) |
| Potomac to Hechingen | 4,122.72 mi (6,634.87 km) |
| Potomac to Heddesheim | 4,073.46 mi (6,555.61 km) |
| Potomac to Heek | 3,939.98 mi (6,340.78 km) |
| Potomac to Heide | 3,960.27 mi (6,373.44 km) |
