| Gretna to Kluczbork | 5,355.02 mi (8,618.07 km) |
| Gretna to Knurow | 5,400.89 mi (8,691.90 km) |
| Gretna to Kobylka | 5,410.26 mi (8,706.97 km) |
| Gretna to Kokoszki | 5,240.30 mi (8,433.45 km) |
| Gretna to Kolbuszowa | 5,512.48 mi (8,871.48 km) |
| Gretna to Kolno | 5,393.21 mi (8,679.53 km) |
| Gretna to Kolo | 5,324.85 mi (8,569.51 km) |
| Gretna to Kolobrzeg | 5,145.81 mi (8,281.38 km) |
| Gretna to Koluszki | 5,383.42 mi (8,663.78 km) |
| Gretna to Komorniki | 5,252.96 mi (8,453.82 km) |
| Gretna to Konin | 5,311.13 mi (8,547.44 km) |
| Gretna to Konskie | 5,426.61 mi (8,733.29 km) |
| Gretna to Konstancin-Jeziorna | 5,417.11 mi (8,717.99 km) |
| Gretna to Konstantynow Lodzki | 5,366.75 mi (8,636.94 km) |
| Gretna to Koronowo | 5,258.93 mi (8,463.44 km) |
