| Herndon to Karditsa | 5,004.98 mi (8,054.74 km) |
| Herndon to Kastoria | 4,930.35 mi (7,934.62 km) |
| Herndon to Katerini | 4,992.95 mi (8,035.37 km) |
| Herndon to Keratsini | 5,136.43 mi (8,266.29 km) |
| Herndon to Kerkyra | 4,908.38 mi (7,899.28 km) |
| Herndon to Kiato | 5,097.07 mi (8,202.94 km) |
| Herndon to Kifisia | 5,140.14 mi (8,272.26 km) |
| Herndon to Kilkis | 4,978.98 mi (8,012.90 km) |
| Herndon to Komotini | 5,080.09 mi (8,175.61 km) |
| Herndon to Korinthos | 5,107.77 mi (8,220.17 km) |
| Herndon to Koropi | 5,150.32 mi (8,288.64 km) |
| Herndon to Korydallos | 5,137.17 mi (8,267.48 km) |
| Herndon to Kos | 5,339.72 mi (8,593.45 km) |
| Herndon to Kozani | 4,961.14 mi (7,984.18 km) |
| Herndon to Lagos | 5,065.34 mi (8,151.88 km) |
