| Niksar to Kluczbork | 1,148.68 mi (1,848.61 km) |
| Niksar to Knurow | 1,104.00 mi (1,776.72 km) |
| Niksar to Kobylka | 1,100.84 mi (1,771.63 km) |
| Niksar to Kokoszki | 1,276.71 mi (2,054.67 km) |
| Niksar to Kolbuszowa | 991.29 mi (1,595.33 km) |
| Niksar to Kolno | 1,129.80 mi (1,818.23 km) |
| Niksar to Kolo | 1,180.19 mi (1,899.33 km) |
| Niksar to Kolobrzeg | 1,362.31 mi (2,192.42 km) |
| Niksar to Koluszki | 1,121.75 mi (1,805.29 km) |
| Niksar to Komorniki | 1,250.70 mi (2,012.80 km) |
| Niksar to Konin | 1,193.53 mi (1,920.80 km) |
| Niksar to Konskie | 1,077.80 mi (1,734.54 km) |
| Niksar to Konstancin-Jeziorna | 1,092.22 mi (1,757.75 km) |
| Niksar to Konstantynow Lodzki | 1,137.86 mi (1,831.20 km) |
| Niksar to Koronowo | 1,249.49 mi (2,010.86 km) |
