| Duluth to Karditsa | 5,232.97 mi (8,421.65 km) |
| Duluth to Kastoria | 5,150.16 mi (8,288.39 km) |
| Duluth to Katerini | 5,205.36 mi (8,377.22 km) |
| Duluth to Keratsini | 5,365.97 mi (8,635.69 km) |
| Duluth to Kerkyra | 5,150.14 mi (8,288.35 km) |
| Duluth to Kiato | 5,333.68 mi (8,583.74 km) |
| Duluth to Kifisia | 5,366.58 mi (8,636.68 km) |
| Duluth to Kilkis | 5,179.81 mi (8,336.10 km) |
| Duluth to Komotini | 5,257.85 mi (8,461.68 km) |
| Duluth to Korinthos | 5,343.67 mi (8,599.80 km) |
| Duluth to Koropi | 5,378.36 mi (8,655.63 km) |
| Duluth to Korydallos | 5,366.22 mi (8,636.10 km) |
| Duluth to Kos | 5,549.34 mi (8,930.80 km) |
| Duluth to Kozani | 5,179.21 mi (8,335.13 km) |
| Duluth to Lagos | 5,246.85 mi (8,443.99 km) |
