| Round Rock to Kluczbork | 5,590.50 mi (8,997.04 km) |
| Round Rock to Knurow | 5,639.49 mi (9,075.89 km) |
| Round Rock to Kobylka | 5,630.41 mi (9,061.27 km) |
| Round Rock to Kokoszki | 5,455.64 mi (8,780.00 km) |
| Round Rock to Kolbuszowa | 5,742.69 mi (9,241.96 km) |
| Round Rock to Kolno | 5,605.35 mi (9,020.94 km) |
| Round Rock to Kolo | 5,552.35 mi (8,935.64 km) |
| Round Rock to Kolobrzeg | 5,369.03 mi (8,640.61 km) |
| Round Rock to Koluszki | 5,610.52 mi (9,029.25 km) |
| Round Rock to Komorniki | 5,484.83 mi (8,826.97 km) |
| Round Rock to Konin | 5,539.45 mi (8,914.88 km) |
| Round Rock to Konskie | 5,655.19 mi (9,101.14 km) |
| Round Rock to Konstancin-Jeziorna | 5,638.89 mi (9,074.91 km) |
| Round Rock to Konstantynow Lodzki | 5,595.04 mi (9,004.34 km) |
| Round Rock to Koronowo | 5,481.70 mi (8,821.95 km) |
