| Gaithersburg to Heist-op-den-Berg | 3,867.88 mi (6,224.76 km) |
| Gaithersburg to Hemiksem | 3,851.41 mi (6,198.25 km) |
| Gaithersburg to Herent | 3,870.59 mi (6,229.11 km) |
| Gaithersburg to Herentals | 3,869.97 mi (6,228.11 km) |
| Gaithersburg to Herenthout | 3,868.16 mi (6,225.20 km) |
| Gaithersburg to Herk-de-Stad | 3,889.74 mi (6,259.94 km) |
| Gaithersburg to Herselt | 3,875.45 mi (6,236.94 km) |
| Gaithersburg to Herstal | 3,915.82 mi (6,301.91 km) |
| Gaithersburg to Herve | 3,923.45 mi (6,314.18 km) |
| Gaithersburg to Herzele | 3,839.40 mi (6,178.92 km) |
| Gaithersburg to Heule | 3,814.30 mi (6,138.52 km) |
| Gaithersburg to Heusden | 3,832.35 mi (6,167.56 km) |
| Gaithersburg to Hoboken | 3,851.65 mi (6,198.64 km) |
| Gaithersburg to Hoeilaart | 3,866.03 mi (6,221.78 km) |
| Gaithersburg to Hoeselt | 3,904.87 mi (6,284.28 km) |
