| Boulogne-sur-Mer to Kranenburg | 203.60 mi (327.67 km) |
| Boulogne-sur-Mer to Krefeld | 219.19 mi (352.75 km) |
| Boulogne-sur-Mer to Kressbronn am Bodensee | 420.33 mi (676.46 km) |
| Boulogne-sur-Mer to Kreuzau | 213.18 mi (343.09 km) |
| Boulogne-sur-Mer to Kreuztal | 277.52 mi (446.62 km) |
| Boulogne-sur-Mer to Kriftel | 304.89 mi (490.67 km) |
| Boulogne-sur-Mer to Kronach | 428.04 mi (688.87 km) |
| Boulogne-sur-Mer to Kronberg | 305.09 mi (491.00 km) |
| Boulogne-sur-Mer to Kronshagen | 434.07 mi (698.56 km) |
| Boulogne-sur-Mer to Krumbach | 428.12 mi (688.99 km) |
| Boulogne-sur-Mer to Kulmbach | 434.14 mi (698.69 km) |
| Boulogne-sur-Mer to Kummersbruck | 463.87 mi (746.53 km) |
| Boulogne-sur-Mer to Kunzell | 355.06 mi (571.42 km) |
| Boulogne-sur-Mer to Kunzelsau | 371.71 mi (598.21 km) |
| Boulogne-sur-Mer to Kurort Steinbach-Hallenberg | 391.41 mi (629.92 km) |
