| Caldas da Rainha to Kikinda | 1,558.25 mi (2,507.76 km) |
| Caldas da Rainha to Kladovo | 1,657.69 mi (2,667.79 km) |
| Caldas da Rainha to Knic | 1,563.14 mi (2,515.64 km) |
| Caldas da Rainha to Knjazevac | 1,648.86 mi (2,653.59 km) |
| Caldas da Rainha to Koceljeva | 1,519.54 mi (2,445.46 km) |
| Caldas da Rainha to Kosjeric | 1,523.52 mi (2,451.87 km) |
| Caldas da Rainha to Kovacica | 1,562.18 mi (2,514.09 km) |
| Caldas da Rainha to Kovin | 1,577.52 mi (2,538.77 km) |
| Caldas da Rainha to Kragujevac | 1,574.35 mi (2,533.67 km) |
| Caldas da Rainha to Kraljevo | 1,561.45 mi (2,512.92 km) |
| Caldas da Rainha to Krupanj | 1,497.44 mi (2,409.89 km) |
| Caldas da Rainha to Krusevac | 1,593.38 mi (2,564.30 km) |
| Caldas da Rainha to Kucevo | 1,611.17 mi (2,592.93 km) |
| Caldas da Rainha to Kula | 1,512.57 mi (2,434.25 km) |
| Caldas da Rainha to Kursumlija | 1,590.75 mi (2,560.06 km) |
