| Serris to Knurow | 717.58 mi (1,154.84 km) |
| Serris to Kobylka | 839.97 mi (1,351.80 km) |
| Serris to Kokoszki | 771.19 mi (1,241.12 km) |
| Serris to Kolbuszowa | 853.86 mi (1,374.15 km) |
| Serris to Kolno | 884.47 mi (1,423.42 km) |
| Serris to Kolo | 731.62 mi (1,177.43 km) |
| Serris to Kolobrzeg | 659.92 mi (1,062.04 km) |
| Serris to Koluszki | 775.02 mi (1,247.27 km) |
| Serris to Komorniki | 653.29 mi (1,051.36 km) |
| Serris to Konin | 716.71 mi (1,153.43 km) |
| Serris to Konskie | 797.07 mi (1,282.76 km) |
| Serris to Konstancin-Jeziorna | 833.85 mi (1,341.96 km) |
| Serris to Konstantynow Lodzki | 755.27 mi (1,215.50 km) |
| Serris to Koronowo | 724.15 mi (1,165.41 km) |
| Serris to Koscian | 647.94 mi (1,042.75 km) |
