| Middle River to Kluczbork | 4,356.53 mi (7,011.15 km) |
| Middle River to Knurow | 4,401.02 mi (7,082.75 km) |
| Middle River to Kobylka | 4,418.63 mi (7,111.10 km) |
| Middle River to Kokoszki | 4,251.95 mi (6,842.85 km) |
| Middle River to Kolbuszowa | 4,515.75 mi (7,267.40 km) |
| Middle River to Kolno | 4,405.91 mi (7,090.62 km) |
| Middle River to Kolo | 4,329.97 mi (6,968.41 km) |
| Middle River to Kolobrzeg | 4,153.70 mi (6,684.73 km) |
| Middle River to Koluszki | 4,388.53 mi (7,062.65 km) |
| Middle River to Komorniki | 4,256.33 mi (6,849.91 km) |
| Middle River to Konin | 4,315.92 mi (6,945.80 km) |
| Middle River to Konskie | 4,430.88 mi (7,130.82 km) |
| Middle River to Konstancin-Jeziorna | 4,424.64 mi (7,120.77 km) |
| Middle River to Konstantynow Lodzki | 4,371.35 mi (7,035.01 km) |
| Middle River to Koronowo | 4,266.60 mi (6,866.42 km) |
