| Willoughby to Kanjiza | 4,694.28 mi (7,554.71 km) |
| Willoughby to Kikinda | 4,719.35 mi (7,595.05 km) |
| Willoughby to Kladovo | 4,854.39 mi (7,812.38 km) |
| Willoughby to Knic | 4,811.92 mi (7,744.03 km) |
| Willoughby to Knjazevac | 4,896.49 mi (7,880.14 km) |
| Willoughby to Koceljeva | 4,752.82 mi (7,648.92 km) |
| Willoughby to Kosjeric | 4,777.23 mi (7,688.20 km) |
| Willoughby to Kovacica | 4,756.73 mi (7,655.22 km) |
| Willoughby to Kovin | 4,785.51 mi (7,701.54 km) |
| Willoughby to Kragujevac | 4,816.32 mi (7,751.11 km) |
| Willoughby to Kraljevo | 4,819.14 mi (7,755.65 km) |
| Willoughby to Krupanj | 4,740.14 mi (7,628.53 km) |
| Willoughby to Krusevac | 4,850.08 mi (7,805.44 km) |
| Willoughby to Kucevo | 4,823.88 mi (7,763.28 km) |
| Willoughby to Kula | 4,694.33 mi (7,554.80 km) |
