| Potomac to Hameenkyro | 4,203.32 mi (6,764.60 km) |
| Potomac to Hameenlinna | 4,261.64 mi (6,858.45 km) |
| Potomac to Hamina | 4,355.76 mi (7,009.92 km) |
| Potomac to Hanko | 4,257.28 mi (6,851.42 km) |
| Potomac to Hattula | 4,256.74 mi (6,850.57 km) |
| Potomac to Haukipudas | 4,143.09 mi (6,667.66 km) |
| Potomac to Hausjarvi | 4,285.02 mi (6,896.08 km) |
| Potomac to Heinola | 4,299.36 mi (6,919.15 km) |
| Potomac to Helsinki | 4,304.32 mi (6,927.14 km) |
| Potomac to Hollola | 4,292.02 mi (6,907.35 km) |
| Potomac to Huittinen | 4,204.13 mi (6,765.89 km) |
| Potomac to Hyvinkaa | 4,285.41 mi (6,896.70 km) |
| Potomac to Ii | 4,139.21 mi (6,661.42 km) |
| Potomac to Iisalmi | 4,246.30 mi (6,833.75 km) |
| Potomac to Ilmajoki | 4,149.66 mi (6,678.23 km) |
