| Potomac to Haaren | 3,879.95 mi (6,244.18 km) |
| Potomac to Haarlem | 3,836.34 mi (6,173.99 km) |
| Potomac to Hardenberg | 3,909.23 mi (6,291.29 km) |
| Potomac to Harderwijk | 3,875.80 mi (6,237.50 km) |
| Potomac to Hardinxveld-Giessendam | 3,858.49 mi (6,209.65 km) |
| Potomac to Haren | 3,893.01 mi (6,265.19 km) |
| Potomac to Harenkarspel | 3,833.02 mi (6,168.65 km) |
| Potomac to Harlingen | 3,847.64 mi (6,192.17 km) |
| Potomac to Hattem | 3,890.40 mi (6,261.00 km) |
| Potomac to Heemskerk | 3,834.34 mi (6,170.77 km) |
| Potomac to Heemstede | 3,836.52 mi (6,174.28 km) |
| Potomac to Heerde | 3,891.91 mi (6,263.42 km) |
| Potomac to Heerenveen | 3,872.83 mi (6,232.72 km) |
| Potomac to Heerhugowaard | 3,837.15 mi (6,175.29 km) |
| Potomac to Heerlen | 3,928.83 mi (6,322.85 km) |
