| Clarksburg to Jicin | 4,303.95 mi (6,926.54 km) |
| Clarksburg to Jihlava | 4,348.33 mi (6,997.97 km) |
| Clarksburg to Jindrichuv Hradec | 4,334.02 mi (6,974.94 km) |
| Clarksburg to Jirkov | 4,228.27 mi (6,804.74 km) |
| Clarksburg to Kadan | 4,225.40 mi (6,800.12 km) |
| Clarksburg to Karlovy Vary | 4,214.50 mi (6,782.58 km) |
| Clarksburg to Karvina | 4,446.33 mi (7,155.68 km) |
| Clarksburg to Kladno | 4,265.04 mi (6,863.92 km) |
| Clarksburg to Klasterec nad Ohri | 4,221.23 mi (6,793.41 km) |
| Clarksburg to Klatovy | 4,258.21 mi (6,852.92 km) |
| Clarksburg to Kolin | 4,311.85 mi (6,939.26 km) |
| Clarksburg to Koprivnice | 4,440.23 mi (7,145.86 km) |
| Clarksburg to Kralupy nad Vltavou | 4,270.26 mi (6,872.33 km) |
| Clarksburg to Kraluv Dvur | 4,269.07 mi (6,870.41 km) |
| Clarksburg to Krnov | 4,405.76 mi (7,090.38 km) |
