| Gaithersburg to Kidricevo | 4,463.13 mi (7,182.71 km) |
| Gaithersburg to Kobarid | 4,377.31 mi (7,044.60 km) |
| Gaithersburg to Kobilje | 4,477.52 mi (7,205.88 km) |
| Gaithersburg to Kocevje | 4,451.50 mi (7,163.99 km) |
| Gaithersburg to Komen | 4,399.34 mi (7,080.05 km) |
| Gaithersburg to Komenda | 4,418.42 mi (7,110.76 km) |
| Gaithersburg to Koper | 4,407.83 mi (7,093.72 km) |
| Gaithersburg to Kostanjevica na Krki | 4,467.69 mi (7,190.06 km) |
| Gaithersburg to Kostel | 4,458.35 mi (7,175.02 km) |
| Gaithersburg to Kozje | 4,465.12 mi (7,185.92 km) |
| Gaithersburg to Kranj | 4,410.40 mi (7,097.85 km) |
| Gaithersburg to Kranjska Gora | 4,377.76 mi (7,045.32 km) |
| Gaithersburg to Krizevci | 4,471.46 mi (7,196.11 km) |
| Gaithersburg to Krsko | 4,466.41 mi (7,188.00 km) |
| Gaithersburg to Kuzma | 4,459.54 mi (7,176.93 km) |
