| Boulogne-sur-Mer to Jicin | 602.15 mi (969.06 km) |
| Boulogne-sur-Mer to Jihlava | 625.65 mi (1,006.89 km) |
| Boulogne-sur-Mer to Jindrichuv Hradec | 604.48 mi (972.82 km) |
| Boulogne-sur-Mer to Jirkov | 518.49 mi (834.42 km) |
| Boulogne-sur-Mer to Kadan | 511.78 mi (823.63 km) |
| Boulogne-sur-Mer to Karlovy Vary | 495.69 mi (797.74 km) |
| Boulogne-sur-Mer to Karvina | 748.05 mi (1,203.86 km) |
| Boulogne-sur-Mer to Kladno | 550.21 mi (885.48 km) |
| Boulogne-sur-Mer to Klasterec nad Ohri | 507.34 mi (816.48 km) |
| Boulogne-sur-Mer to Klatovy | 525.61 mi (845.89 km) |
| Boulogne-sur-Mer to Kolin | 599.72 mi (965.16 km) |
| Boulogne-sur-Mer to Koprivnice | 734.23 mi (1,181.62 km) |
| Boulogne-sur-Mer to Kralupy nad Vltavou | 558.52 mi (898.85 km) |
| Boulogne-sur-Mer to Kraluv Dvur | 549.67 mi (884.61 km) |
| Boulogne-sur-Mer to Krnov | 708.20 mi (1,139.73 km) |
