| Gaithersburg to Klaukkala | 4,284.90 mi (6,895.87 km) |
| Gaithersburg to Kokkola | 4,122.46 mi (6,634.46 km) |
| Gaithersburg to Kontiolahti | 4,339.36 mi (6,983.53 km) |
| Gaithersburg to Korsholm | 4,105.71 mi (6,607.51 km) |
| Gaithersburg to Kotka | 4,345.55 mi (6,993.49 km) |
| Gaithersburg to Kouvola | 4,323.98 mi (6,958.78 km) |
| Gaithersburg to Kuhmo | 4,279.49 mi (6,887.18 km) |
| Gaithersburg to Kuopio | 4,277.00 mi (6,883.16 km) |
| Gaithersburg to Kurikka | 4,141.72 mi (6,665.46 km) |
| Gaithersburg to Kuusamo | 4,203.61 mi (6,765.06 km) |
| Gaithersburg to Kuusankoski | 4,320.21 mi (6,952.71 km) |
| Gaithersburg to Lahti | 4,289.66 mi (6,903.54 km) |
| Gaithersburg to Laitila | 4,177.94 mi (6,723.74 km) |
| Gaithersburg to Lapinlahti | 4,251.98 mi (6,842.91 km) |
| Gaithersburg to Lappeenranta | 4,358.44 mi (7,014.24 km) |
