| Boulogne-sur-Mer to Kikinda | 926.51 mi (1,491.08 km) |
| Boulogne-sur-Mer to Kladovo | 1,059.76 mi (1,705.51 km) |
| Boulogne-sur-Mer to Knic | 1,006.75 mi (1,620.21 km) |
| Boulogne-sur-Mer to Knjazevac | 1,093.72 mi (1,760.17 km) |
| Boulogne-sur-Mer to Koceljeva | 947.98 mi (1,525.62 km) |
| Boulogne-sur-Mer to Kosjeric | 970.79 mi (1,562.34 km) |
| Boulogne-sur-Mer to Kovacica | 958.26 mi (1,542.17 km) |
| Boulogne-sur-Mer to Kovin | 985.64 mi (1,586.24 km) |
| Boulogne-sur-Mer to Kragujevac | 1,012.10 mi (1,628.82 km) |
| Boulogne-sur-Mer to Kraljevo | 1,013.18 mi (1,630.55 km) |
| Boulogne-sur-Mer to Krupanj | 933.97 mi (1,503.08 km) |
| Boulogne-sur-Mer to Krusevac | 1,044.90 mi (1,681.60 km) |
| Boulogne-sur-Mer to Kucevo | 1,024.61 mi (1,648.95 km) |
| Boulogne-sur-Mer to Kula | 895.63 mi (1,441.37 km) |
| Boulogne-sur-Mer to Kursumlija | 1,060.37 mi (1,706.50 km) |
