| Portici to Knurow | 682.15 mi (1,097.81 km) |
| Portici to Kobylka | 858.68 mi (1,381.91 km) |
| Portici to Kokoszki | 954.50 mi (1,536.13 km) |
| Portici to Kolbuszowa | 743.24 mi (1,196.13 km) |
| Portici to Kolno | 939.07 mi (1,511.29 km) |
| Portici to Kolo | 811.99 mi (1,306.77 km) |
| Portici to Kolobrzeg | 924.60 mi (1,488.00 km) |
| Portici to Koluszki | 798.36 mi (1,284.83 km) |
| Portici to Komorniki | 798.70 mi (1,285.39 km) |
| Portici to Konin | 808.96 mi (1,301.90 km) |
| Portici to Konskie | 773.54 mi (1,244.90 km) |
| Portici to Konstancin-Jeziorna | 841.53 mi (1,354.31 km) |
| Portici to Konstantynow Lodzki | 791.46 mi (1,273.73 km) |
| Portici to Koronowo | 879.56 mi (1,415.52 km) |
| Portici to Koscian | 785.85 mi (1,264.71 km) |
