| Boulogne-sur-Mer to Clondalkin | 384.50 mi (618.80 km) |
| Boulogne-sur-Mer to Clonmel | 415.93 mi (669.37 km) |
| Boulogne-sur-Mer to Cobh | 434.91 mi (699.92 km) |
| Boulogne-sur-Mer to Cork | 442.62 mi (712.32 km) |
| Boulogne-sur-Mer to Donegal | 488.73 mi (786.53 km) |
| Boulogne-sur-Mer to Douglas | 441.01 mi (709.73 km) |
| Boulogne-sur-Mer to Drogheda | 395.09 mi (635.84 km) |
| Boulogne-sur-Mer to Dublin | 380.34 mi (612.10 km) |
| Boulogne-sur-Mer to Dun Dealgan | 406.94 mi (654.91 km) |
| Boulogne-sur-Mer to Ennis | 475.43 mi (765.13 km) |
| Boulogne-sur-Mer to Enniscorthy | 371.55 mi (597.96 km) |
| Boulogne-sur-Mer to Finglas | 382.09 mi (614.91 km) |
| Boulogne-sur-Mer to Galway | 485.93 mi (782.04 km) |
| Boulogne-sur-Mer to Glanmire | 439.81 mi (707.81 km) |
| Boulogne-sur-Mer to Glencullen | 375.00 mi (603.51 km) |
