| Boulogne-sur-Mer to Cebazat | 345.02 mi (555.25 km) |
| Boulogne-sur-Mer to Cenon | 417.49 mi (671.89 km) |
| Boulogne-sur-Mer to Cergy | 118.48 mi (190.68 km) |
| Boulogne-sur-Mer to Cernay | 321.66 mi (517.66 km) |
| Boulogne-sur-Mer to Cesson | 155.67 mi (250.52 km) |
| Boulogne-sur-Mer to Cesson-Sevigne | 230.89 mi (371.58 km) |
| Boulogne-sur-Mer to Cestas | 426.82 mi (686.90 km) |
| Boulogne-sur-Mer to Chalette-sur-Loing | 194.23 mi (312.58 km) |
| Boulogne-sur-Mer to Challans | 311.59 mi (501.45 km) |
| Boulogne-sur-Mer to Chalon-sur-Saone | 309.90 mi (498.74 km) |
| Boulogne-sur-Mer to Chalons-en-Champagne | 173.05 mi (278.50 km) |
| Boulogne-sur-Mer to Chamalieres | 348.65 mi (561.09 km) |
| Boulogne-sur-Mer to Chambery | 407.47 mi (655.77 km) |
| Boulogne-sur-Mer to Chambly | 111.38 mi (179.25 km) |
| Boulogne-sur-Mer to Chambray-les-Tours | 237.67 mi (382.50 km) |
