| Herndon to Arcata (California) | 2,448.16 mi (3,939.93 km) |
| Herndon to Archdale (North Carolina) | 254.56 mi (409.67 km) |
| Herndon to Arden-Arcade (California) | 2,346.13 mi (3,775.74 km) |
| Herndon to Ardmore (Oklahoma) | 1,141.11 mi (1,836.43 km) |
| Herndon to Ardmore (Pennsylvania) | 132.44 mi (213.15 km) |
| Herndon to Arecibo (Puerto Rico) | 1,554.95 mi (2,502.45 km) |
| Herndon to Arkadelphia (Arkansas) | 931.27 mi (1,498.74 km) |
| Herndon to Arkansas City (Kansas) | 1,075.53 mi (1,730.91 km) |
| Herndon to Arlington (Tennessee) | 722.86 mi (1,163.33 km) |
| Herndon to Arlington (Texas) | 1,184.40 mi (1,906.10 km) |
| Herndon to Arlington (Virginia) | 16.60 mi (26.71 km) |
| Herndon to Arlington (Washington) | 2,293.53 mi (3,691.09 km) |
| Herndon to Arlington Heights (Illinois) | 596.35 mi (959.73 km) |
| Herndon to Arnold (Maryland) | 48.02 mi (77.28 km) |
| Herndon to Arnold (Missouri) | 700.67 mi (1,127.62 km) |
