| Round Rock to Krosno Odrzanskie | 5,439.86 mi (8,754.61 km) |
| Round Rock to Krotoszyn | 5,534.09 mi (8,906.25 km) |
| Round Rock to Kruszwica | 5,521.86 mi (8,886.58 km) |
| Round Rock to Krynica | 5,752.99 mi (9,258.54 km) |
| Round Rock to Krzeszowice | 5,675.76 mi (9,134.26 km) |
| Round Rock to Kudowa-Zdroj | 5,544.97 mi (8,923.77 km) |
| Round Rock to Kutno | 5,575.14 mi (8,972.31 km) |
| Round Rock to Kwidzyn | 5,496.07 mi (8,845.07 km) |
| Round Rock to Lancut | 5,766.58 mi (9,280.41 km) |
| Round Rock to Lapy | 5,654.37 mi (9,099.83 km) |
| Round Rock to Lask | 5,595.31 mi (9,004.78 km) |
| Round Rock to Laziska Gorne | 5,648.13 mi (9,089.78 km) |
| Round Rock to Lebork | 5,423.80 mi (8,728.76 km) |
| Round Rock to Leczna | 5,731.50 mi (9,223.96 km) |
| Round Rock to Leczyca | 5,577.59 mi (8,976.27 km) |
