| Seia to Carpentras | 698.00 mi (1,123.32 km) |
| Seia to Carquefou | 566.44 mi (911.60 km) |
| Seia to Carqueiranne | 732.70 mi (1,179.17 km) |
| Seia to Carrieres-sous-Poissy | 757.66 mi (1,219.34 km) |
| Seia to Carrieres-sur-Seine | 763.56 mi (1,228.83 km) |
| Seia to Carros | 796.70 mi (1,282.16 km) |
| Seia to Carvin | 864.83 mi (1,391.80 km) |
| Seia to Castanet-Tolosan | 518.34 mi (834.19 km) |
| Seia to Castelginest | 519.90 mi (836.70 km) |
| Seia to Castelnau-le-Lez | 634.96 mi (1,021.87 km) |
| Seia to Castelnaudary | 535.20 mi (861.32 km) |
| Seia to Castelsarrasin | 514.96 mi (828.75 km) |
| Seia to Castres | 555.64 mi (894.22 km) |
| Seia to Caudebec-les-Elbeuf | 745.39 mi (1,199.60 km) |
| Seia to Caudry | 859.17 mi (1,382.71 km) |
