| Herndon to Florence (Kentucky) | 389.86 mi (627.42 km) |
| Herndon to Florence (South Carolina) | 356.89 mi (574.36 km) |
| Herndon to Florence-Graham (California) | 2,277.13 mi (3,664.69 km) |
| Herndon to Florham Park (New Jersey) | 201.86 mi (324.86 km) |
| Herndon to Florida (Puerto Rico) | 1,564.77 mi (2,518.25 km) |
| Herndon to Florida City (Florida) | 951.73 mi (1,531.66 km) |
| Herndon to Florida Ridge (Florida) | 805.62 mi (1,296.52 km) |
| Herndon to Florin (California) | 2,349.27 mi (3,780.78 km) |
| Herndon to Florissant (Missouri) | 695.48 mi (1,119.26 km) |
| Herndon to Flower Hill (Maryland) | 17.51 mi (28.18 km) |
| Herndon to Flower Mound (Texas) | 1,173.53 mi (1,888.62 km) |
| Herndon to Flowing Wells (Arizona) | 1,932.00 mi (3,109.25 km) |
| Herndon to Foley (Alabama) | 830.61 mi (1,336.74 km) |
| Herndon to Folsom (California) | 2,332.34 mi (3,753.54 km) |
| Herndon to Fond du Lac (Wisconsin) | 661.40 mi (1,064.41 km) |
