| Round Rock to Jozefow | 5,640.43 mi (9,077.39 km) |
| Round Rock to Kalisz | 5,552.79 mi (8,936.35 km) |
| Round Rock to Kamien Pomorski | 5,350.84 mi (8,611.34 km) |
| Round Rock to Kamienna Gora | 5,523.44 mi (8,889.12 km) |
| Round Rock to Karczew | 5,643.20 mi (9,081.86 km) |
| Round Rock to Kartuzy | 5,447.26 mi (8,766.51 km) |
| Round Rock to Katowice | 5,648.80 mi (9,090.87 km) |
| Round Rock to Kedzierzyn-Kozle | 5,617.06 mi (9,039.79 km) |
| Round Rock to Kepno | 5,569.73 mi (8,963.62 km) |
| Round Rock to Ketrzyn | 5,558.07 mi (8,944.85 km) |
| Round Rock to Kety | 5,671.65 mi (9,127.63 km) |
| Round Rock to Kielce | 5,676.85 mi (9,136.01 km) |
| Round Rock to Kielczow | 5,548.25 mi (8,929.04 km) |
| Round Rock to Klobuck | 5,617.76 mi (9,040.92 km) |
| Round Rock to Klodzko | 5,559.59 mi (8,947.30 km) |
