| Blackrock to Carpentras | 816.79 mi (1,314.50 km) |
| Blackrock to Carquefou | 463.31 mi (745.62 km) |
| Blackrock to Carqueiranne | 900.55 mi (1,449.29 km) |
| Blackrock to Carrieres-sous-Poissy | 465.79 mi (749.62 km) |
| Blackrock to Carrieres-sur-Seine | 475.84 mi (765.79 km) |
| Blackrock to Carros | 895.85 mi (1,441.72 km) |
| Blackrock to Carvin | 434.74 mi (699.64 km) |
| Blackrock to Castanet-Tolosan | 761.28 mi (1,225.17 km) |
| Blackrock to Castelginest | 748.75 mi (1,205.00 km) |
| Blackrock to Castelnau-le-Lez | 810.17 mi (1,303.84 km) |
| Blackrock to Castelnaudary | 783.34 mi (1,260.66 km) |
| Blackrock to Castelsarrasin | 720.21 mi (1,159.07 km) |
| Blackrock to Castres | 772.41 mi (1,243.07 km) |
| Blackrock to Caudebec-les-Elbeuf | 416.68 mi (670.59 km) |
| Blackrock to Caudry | 464.98 mi (748.32 km) |
