| Gaithersburg to Koscian | 4,300.23 mi (6,920.55 km) |
| Gaithersburg to Koscielisko | 4,520.52 mi (7,275.07 km) |
| Gaithersburg to Koscierzyna | 4,280.59 mi (6,888.95 km) |
| Gaithersburg to Kostrzyn | 4,310.93 mi (6,937.77 km) |
| Gaithersburg to Kostrzyn nad Odra | 4,209.96 mi (6,775.28 km) |
| Gaithersburg to Koszalin | 4,213.75 mi (6,781.38 km) |
| Gaithersburg to Kowary | 4,312.81 mi (6,940.80 km) |
| Gaithersburg to Kozienice | 4,498.39 mi (7,239.45 km) |
| Gaithersburg to Kozuchow | 4,272.08 mi (6,875.25 km) |
| Gaithersburg to Kozy | 4,471.34 mi (7,195.93 km) |
| Gaithersburg to Krakow | 4,494.04 mi (7,232.45 km) |
| Gaithersburg to Krapkowice | 4,405.10 mi (7,089.32 km) |
| Gaithersburg to Krasnik | 4,546.90 mi (7,317.53 km) |
| Gaithersburg to Krasnystaw | 4,579.56 mi (7,370.09 km) |
| Gaithersburg to Krosno | 4,576.14 mi (7,364.59 km) |
