| Southborough to Kluczbork | 777.52 mi (1,251.29 km) |
| Southborough to Knurow | 806.72 mi (1,298.30 km) |
| Southborough to Kobylka | 896.06 mi (1,442.07 km) |
| Southborough to Kokoszki | 790.90 mi (1,272.83 km) |
| Southborough to Kolbuszowa | 939.59 mi (1,512.12 km) |
| Southborough to Kolno | 925.24 mi (1,489.03 km) |
| Southborough to Kolo | 788.06 mi (1,268.26 km) |
| Southborough to Kolobrzeg | 672.95 mi (1,083.01 km) |
| Southborough to Koluszki | 839.52 mi (1,351.08 km) |
| Southborough to Komorniki | 706.17 mi (1,136.48 km) |
| Southborough to Konin | 772.51 mi (1,243.23 km) |
| Southborough to Konskie | 870.09 mi (1,400.27 km) |
| Southborough to Konstancin-Jeziorna | 893.64 mi (1,438.18 km) |
| Southborough to Konstantynow Lodzki | 819.63 mi (1,319.07 km) |
| Southborough to Koronowo | 760.19 mi (1,223.41 km) |
