| Duluth to Kluczbork | 4,519.15 mi (7,272.87 km) |
| Duluth to Knurow | 4,571.20 mi (7,356.64 km) |
| Duluth to Kobylka | 4,541.63 mi (7,309.04 km) |
| Duluth to Kokoszki | 4,363.84 mi (7,022.93 km) |
| Duluth to Kolbuszowa | 4,663.41 mi (7,505.03 km) |
| Duluth to Kolno | 4,508.78 mi (7,256.18 km) |
| Duluth to Kolo | 4,472.35 mi (7,197.55 km) |
| Duluth to Kolobrzeg | 4,286.56 mi (6,898.55 km) |
| Duluth to Koluszki | 4,529.37 mi (7,289.32 km) |
| Duluth to Komorniki | 4,410.62 mi (7,098.21 km) |
| Duluth to Konin | 4,460.53 mi (7,178.52 km) |
| Duluth to Konskie | 4,575.14 mi (7,362.98 km) |
| Duluth to Konstancin-Jeziorna | 4,551.70 mi (7,325.26 km) |
| Duluth to Konstantynow Lodzki | 4,515.41 mi (7,266.84 km) |
| Duluth to Koronowo | 4,397.38 mi (7,076.90 km) |
