| Gaithersburg to Krosno Odrzanskie | 4,244.03 mi (6,830.11 km) |
| Gaithersburg to Krotoszyn | 4,342.90 mi (6,989.22 km) |
| Gaithersburg to Kruszwica | 4,341.78 mi (6,987.43 km) |
| Gaithersburg to Krynica | 4,556.45 mi (7,332.90 km) |
| Gaithersburg to Krzeszowice | 4,479.97 mi (7,209.82 km) |
| Gaithersburg to Kudowa-Zdroj | 4,340.28 mi (6,985.01 km) |
| Gaithersburg to Kutno | 4,394.97 mi (7,073.02 km) |
| Gaithersburg to Kwidzyn | 4,327.09 mi (6,963.77 km) |
| Gaithersburg to Lancut | 4,579.62 mi (7,370.19 km) |
| Gaithersburg to Lapy | 4,493.42 mi (7,231.47 km) |
| Gaithersburg to Lask | 4,409.11 mi (7,095.78 km) |
| Gaithersburg to Laziska Gorne | 4,449.78 mi (7,161.23 km) |
| Gaithersburg to Lebork | 4,257.95 mi (6,852.51 km) |
| Gaithersburg to Leczna | 4,556.65 mi (7,333.23 km) |
| Gaithersburg to Leczyca | 4,395.34 mi (7,073.62 km) |
