| Blackrock to Jicin | 935.75 mi (1,505.95 km) |
| Blackrock to Jihlava | 972.94 mi (1,565.80 km) |
| Blackrock to Jindrichuv Hradec | 956.39 mi (1,539.15 km) |
| Blackrock to Jirkov | 855.83 mi (1,377.33 km) |
| Blackrock to Kadan | 851.64 mi (1,370.58 km) |
| Blackrock to Karlovy Vary | 838.97 mi (1,350.20 km) |
| Blackrock to Karvina | 1,081.99 mi (1,741.30 km) |
| Blackrock to Kladno | 891.42 mi (1,434.60 km) |
| Blackrock to Klasterec nad Ohri | 847.32 mi (1,363.63 km) |
| Blackrock to Klatovy | 879.37 mi (1,415.21 km) |
| Blackrock to Kolin | 939.80 mi (1,512.47 km) |
| Blackrock to Koprivnice | 1,072.36 mi (1,725.80 km) |
| Blackrock to Kralupy nad Vltavou | 897.78 mi (1,444.84 km) |
| Blackrock to Kraluv Dvur | 893.99 mi (1,438.73 km) |
| Blackrock to Krnov | 1,041.09 mi (1,675.48 km) |
