| Prospect Heights to Kanjiza | 4,912.31 mi (7,905.60 km) |
| Prospect Heights to Kikinda | 4,937.38 mi (7,945.95 km) |
| Prospect Heights to Kladovo | 5,072.13 mi (8,162.80 km) |
| Prospect Heights to Knic | 5,036.24 mi (8,105.05 km) |
| Prospect Heights to Knjazevac | 5,118.47 mi (8,237.39 km) |
| Prospect Heights to Koceljeva | 4,977.15 mi (8,009.94 km) |
| Prospect Heights to Kosjeric | 5,002.99 mi (8,051.53 km) |
| Prospect Heights to Kovacica | 4,977.02 mi (8,009.73 km) |
| Prospect Heights to Kovin | 5,006.35 mi (8,056.94 km) |
| Prospect Heights to Kragujevac | 5,039.81 mi (8,110.79 km) |
| Prospect Heights to Kraljevo | 5,044.20 mi (8,117.86 km) |
| Prospect Heights to Krupanj | 4,965.78 mi (7,991.65 km) |
| Prospect Heights to Krusevac | 5,074.23 mi (8,166.18 km) |
| Prospect Heights to Kucevo | 5,044.13 mi (8,117.73 km) |
| Prospect Heights to Kula | 4,915.17 mi (7,910.21 km) |
