| Gaithersburg to Karis | 4,263.64 mi (6,861.67 km) |
| Gaithersburg to Karkkila | 4,263.96 mi (6,862.18 km) |
| Gaithersburg to Kauhajoki | 4,141.48 mi (6,665.07 km) |
| Gaithersburg to Kauhava | 4,144.56 mi (6,670.03 km) |
| Gaithersburg to Kauniainen | 4,290.28 mi (6,904.53 km) |
| Gaithersburg to Kemi | 4,098.20 mi (6,595.41 km) |
| Gaithersburg to Kemijarvi | 4,135.45 mi (6,655.36 km) |
| Gaithersburg to Kempele | 4,149.35 mi (6,677.73 km) |
| Gaithersburg to Kerava | 4,294.54 mi (6,911.39 km) |
| Gaithersburg to Keuruu | 4,218.30 mi (6,788.69 km) |
| Gaithersburg to Kiiminki | 4,148.69 mi (6,676.68 km) |
| Gaithersburg to Kirkkonummi | 4,284.45 mi (6,895.16 km) |
| Gaithersburg to Kitee | 4,372.50 mi (7,036.86 km) |
| Gaithersburg to Kiuruvesi | 4,221.65 mi (6,794.09 km) |
| Gaithersburg to Kivisto | 4,289.78 mi (6,903.74 km) |
