| Upminster to Kanjiza | 973.53 mi (1,566.74 km) |
| Upminster to Kikinda | 998.26 mi (1,606.54 km) |
| Upminster to Kladovo | 1,132.26 mi (1,822.19 km) |
| Upminster to Knic | 1,082.35 mi (1,741.88 km) |
| Upminster to Knjazevac | 1,168.50 mi (1,880.52 km) |
| Upminster to Koceljeva | 1,023.40 mi (1,647.00 km) |
| Upminster to Kosjeric | 1,046.98 mi (1,684.95 km) |
| Upminster to Kovacica | 1,031.56 mi (1,660.13 km) |
| Upminster to Kovin | 1,059.39 mi (1,704.93 km) |
| Upminster to Kragujevac | 1,087.32 mi (1,749.88 km) |
| Upminster to Kraljevo | 1,089.14 mi (1,752.80 km) |
| Upminster to Krupanj | 1,010.00 mi (1,625.44 km) |
| Upminster to Krusevac | 1,120.53 mi (1,803.32 km) |
| Upminster to Kucevo | 1,098.25 mi (1,767.46 km) |
| Upminster to Kula | 968.88 mi (1,559.26 km) |
