| Round Rock to Jicin | 5,513.70 mi (8,873.44 km) |
| Round Rock to Jihlava | 5,564.83 mi (8,955.72 km) |
| Round Rock to Jindrichuv Hradec | 5,554.04 mi (8,938.37 km) |
| Round Rock to Jirkov | 5,443.13 mi (8,759.86 km) |
| Round Rock to Kadan | 5,441.66 mi (8,757.51 km) |
| Round Rock to Karlovy Vary | 5,432.93 mi (8,743.46 km) |
| Round Rock to Karvina | 5,650.28 mi (9,093.25 km) |
| Round Rock to Kladno | 5,480.57 mi (8,820.13 km) |
| Round Rock to Klasterec nad Ohri | 5,437.71 mi (8,751.15 km) |
| Round Rock to Klatovy | 5,481.36 mi (8,821.40 km) |
| Round Rock to Kolin | 5,525.03 mi (8,891.68 km) |
| Round Rock to Koprivnice | 5,647.34 mi (9,088.51 km) |
| Round Rock to Kralupy nad Vltavou | 5,484.52 mi (8,826.49 km) |
| Round Rock to Kraluv Dvur | 5,486.23 mi (8,829.24 km) |
| Round Rock to Krnov | 5,610.73 mi (9,029.59 km) |
