| Herndon to Ukiah (California) | 2,431.58 mi (3,913.25 km) |
| Herndon to Union (Missouri) | 733.85 mi (1,181.02 km) |
| Herndon to Union City (California) | 2,397.86 mi (3,858.98 km) |
| Herndon to Union City (Georgia) | 545.28 mi (877.54 km) |
| Herndon to Union City (New Jersey) | 216.93 mi (349.11 km) |
| Herndon to Union City (Tennessee) | 660.72 mi (1,063.33 km) |
| Herndon to Union Hill-Novelty Hill (Washington) | 2,288.87 mi (3,683.58 km) |
| Herndon to Union Park (Florida) | 751.87 mi (1,210.02 km) |
| Herndon to Uniondale (New York) | 234.59 mi (377.54 km) |
| Herndon to Universal City (Texas) | 1,355.68 mi (2,181.75 km) |
| Herndon to University (Florida) | 806.43 mi (1,297.83 km) |
| Herndon to University City (Missouri) | 696.60 mi (1,121.06 km) |
| Herndon to University Heights (Ohio) | 279.79 mi (450.27 km) |
| Herndon to University of California-Santa Barbara (California) | 2,352.55 mi (3,786.06 km) |
| Herndon to University Park (Texas) | 1,162.52 mi (1,870.89 km) |
