| Serris to Koscielisko | 772.83 mi (1,243.74 km) |
| Serris to Koscierzyna | 745.89 mi (1,200.40 km) |
| Serris to Kostrzyn | 676.89 mi (1,089.35 km) |
| Serris to Kostrzyn nad Odra | 579.18 mi (932.09 km) |
| Serris to Koszalin | 682.38 mi (1,098.18 km) |
| Serris to Kowary | 595.89 mi (959.00 km) |
| Serris to Kozienice | 848.82 mi (1,366.05 km) |
| Serris to Kozuchow | 598.84 mi (963.74 km) |
| Serris to Kozy | 738.18 mi (1,187.98 km) |
| Serris to Krakow | 773.02 mi (1,244.05 km) |
| Serris to Krapkowice | 686.74 mi (1,105.20 km) |
| Serris to Krasnik | 873.99 mi (1,406.54 km) |
| Serris to Krasnystaw | 916.17 mi (1,474.43 km) |
| Serris to Krosno | 854.58 mi (1,375.31 km) |
| Serris to Krosno Odrzanskie | 583.66 mi (939.32 km) |
