| Gaithersburg to Kamen | 3,971.52 mi (6,391.55 km) |
| Gaithersburg to Kamenz | 4,230.95 mi (6,809.06 km) |
| Gaithersburg to Kamp-Lintfort | 3,929.35 mi (6,323.68 km) |
| Gaithersburg to Kandel | 4,064.85 mi (6,541.74 km) |
| Gaithersburg to Kappeln | 3,973.30 mi (6,394.40 km) |
| Gaithersburg to Karben | 4,054.02 mi (6,524.31 km) |
| Gaithersburg to Karlsdorf-Neuthard | 4,077.32 mi (6,561.81 km) |
| Gaithersburg to Karlsfeld | 4,224.99 mi (6,799.46 km) |
| Gaithersburg to Karlsruhe | 4,075.39 mi (6,558.71 km) |
| Gaithersburg to Kassel | 4,051.29 mi (6,519.92 km) |
| Gaithersburg to Kaufbeuren | 4,201.17 mi (6,761.13 km) |
| Gaithersburg to Kaufering | 4,205.41 mi (6,767.96 km) |
| Gaithersburg to Kaufungen | 4,057.03 mi (6,529.15 km) |
| Gaithersburg to Kehl | 4,064.40 mi (6,541.02 km) |
| Gaithersburg to Kelheim | 4,218.74 mi (6,789.41 km) |
