| Herndon to Kluczbork | 4,411.05 mi (7,098.90 km) |
| Herndon to Knurow | 4,455.72 mi (7,170.79 km) |
| Herndon to Kobylka | 4,472.34 mi (7,197.54 km) |
| Herndon to Kokoszki | 4,305.27 mi (6,928.67 km) |
| Herndon to Kolbuszowa | 4,570.07 mi (7,354.81 km) |
| Herndon to Kolno | 4,459.14 mi (7,176.29 km) |
| Herndon to Kolo | 4,384.04 mi (7,055.43 km) |
| Herndon to Kolobrzeg | 4,207.43 mi (6,771.20 km) |
| Herndon to Koluszki | 4,442.61 mi (7,149.69 km) |
| Herndon to Komorniki | 4,310.61 mi (6,937.26 km) |
| Herndon to Konin | 4,370.03 mi (7,032.88 km) |
| Herndon to Konskie | 4,485.07 mi (7,218.02 km) |
| Herndon to Konstancin-Jeziorna | 4,478.45 mi (7,207.36 km) |
| Herndon to Konstantynow Lodzki | 4,425.49 mi (7,122.14 km) |
| Herndon to Koronowo | 4,320.37 mi (6,952.96 km) |
