| Potomac to Hebburn | 3,541.73 mi (5,699.87 km) |
| Potomac to Heckmondwike | 3,559.11 mi (5,727.84 km) |
| Potomac to Hednesford | 3,565.30 mi (5,737.80 km) |
| Potomac to Helensburgh | 3,402.27 mi (5,475.43 km) |
| Potomac to Hellesdon | 3,696.40 mi (5,948.78 km) |
| Potomac to Helston | 3,481.50 mi (5,602.94 km) |
| Potomac to Hemel Hempstead | 3,646.96 mi (5,869.22 km) |
| Potomac to Hemsworth | 3,573.58 mi (5,751.13 km) |
| Potomac to Hendon | 3,660.57 mi (5,891.11 km) |
| Potomac to Henley on Thames | 3,633.98 mi (5,848.32 km) |
| Potomac to Hereford | 3,549.31 mi (5,712.06 km) |
| Potomac to Herne Bay | 3,720.51 mi (5,987.58 km) |
| Potomac to Hersham | 3,658.15 mi (5,887.22 km) |
| Potomac to Hertford | 3,661.90 mi (5,893.26 km) |
| Potomac to Hessle | 3,607.36 mi (5,805.48 km) |
