| Herndon to Hagerstown (Maryland) | 49.65 mi (79.90 km) |
| Herndon to Haines City (Florida) | 788.60 mi (1,269.13 km) |
| Herndon to Halawa (Hawaii) | 4,809.96 mi (7,740.88 km) |
| Herndon to Half Moon Bay (California) | 2,422.57 mi (3,898.75 km) |
| Herndon to Halfway (Maryland) | 49.14 mi (79.08 km) |
| Herndon to Hallandale Beach (Florida) | 911.27 mi (1,466.55 km) |
| Herndon to Haltom City (Texas) | 1,188.28 mi (1,912.36 km) |
| Herndon to Ham Lake (Minnesota) | 917.42 mi (1,476.45 km) |
| Herndon to Hamilton (Ohio) | 385.48 mi (620.37 km) |
| Herndon to Hamilton Square (New Jersey) | 169.42 mi (272.65 km) |
| Herndon to Hammond (Indiana) | 562.61 mi (905.44 km) |
| Herndon to Hammond (Louisiana) | 943.09 mi (1,517.76 km) |
| Herndon to Hammonton (New Jersey) | 147.83 mi (237.90 km) |
| Herndon to Hampton (Virginia) | 143.55 mi (231.03 km) |
| Herndon to Hampton Bays (New York) | 289.19 mi (465.40 km) |
