| Herndon to Keizer (Oregon) | 2,348.74 mi (3,779.93 km) |
| Herndon to Keller (Texas) | 1,182.38 mi (1,902.85 km) |
| Herndon to Kelso (Washington) | 2,335.13 mi (3,758.03 km) |
| Herndon to Kemp Mill (Maryland) | 20.22 mi (32.54 km) |
| Herndon to Ken Caryl (Colorado) | 1,477.78 mi (2,378.26 km) |
| Herndon to Kendale Lakes (Florida) | 932.95 mi (1,501.44 km) |
| Herndon to Kendall (Florida) | 935.00 mi (1,504.74 km) |
| Herndon to Kendall Park (New Jersey) | 180.22 mi (290.04 km) |
| Herndon to Kendall West (Florida) | 933.40 mi (1,502.17 km) |
| Herndon to Kenmore (New York) | 286.65 mi (461.33 km) |
| Herndon to Kenmore (Washington) | 2,298.98 mi (3,699.86 km) |
| Herndon to Kenner (Louisiana) | 957.51 mi (1,540.96 km) |
| Herndon to Kennesaw (Georgia) | 526.92 mi (848.00 km) |
| Herndon to Kennett (Missouri) | 717.58 mi (1,154.83 km) |
| Herndon to Kennewick (Washington) | 2,157.22 mi (3,471.71 km) |
