| Gaithersburg to Karlskoga | 4,002.66 mi (6,441.67 km) |
| Gaithersburg to Karlskrona | 4,131.24 mi (6,648.60 km) |
| Gaithersburg to Karlstad | 3,968.71 mi (6,387.02 km) |
| Gaithersburg to Katrineholm | 4,066.46 mi (6,544.33 km) |
| Gaithersburg to Kavlinge | 4,055.93 mi (6,527.39 km) |
| Gaithersburg to Kinna | 3,992.29 mi (6,424.98 km) |
| Gaithersburg to Kiruna | 3,930.44 mi (6,325.44 km) |
| Gaithersburg to Klippansbruk | 4,047.89 mi (6,514.45 km) |
| Gaithersburg to Koping | 4,044.43 mi (6,508.89 km) |
| Gaithersburg to Kristianstad | 4,084.68 mi (6,573.66 km) |
| Gaithersburg to Kristinehamn | 3,990.67 mi (6,422.37 km) |
| Gaithersburg to Kumla | 4,028.67 mi (6,483.52 km) |
| Gaithersburg to Kungalv | 3,958.45 mi (6,370.51 km) |
| Gaithersburg to Kungsangen | 4,101.37 mi (6,600.52 km) |
| Gaithersburg to Kungsbacka | 3,972.19 mi (6,392.62 km) |
