| Ostrow Mazowiecka to Carpentras | 976.68 mi (1,571.82 km) |
| Ostrow Mazowiecka to Carquefou | 1,099.36 mi (1,769.25 km) |
| Ostrow Mazowiecka to Carqueiranne | 989.04 mi (1,591.71 km) |
| Ostrow Mazowiecka to Carrieres-sous-Poissy | 902.57 mi (1,452.54 km) |
| Ostrow Mazowiecka to Carrieres-sur-Seine | 893.33 mi (1,437.67 km) |
| Ostrow Mazowiecka to Carros | 916.68 mi (1,475.26 km) |
| Ostrow Mazowiecka to Carvin | 825.04 mi (1,327.78 km) |
| Ostrow Mazowiecka to Castanet-Tolosan | 1,131.98 mi (1,821.74 km) |
| Ostrow Mazowiecka to Castelginest | 1,126.30 mi (1,812.60 km) |
| Ostrow Mazowiecka to Castelnau-le-Lez | 1,037.90 mi (1,670.34 km) |
| Ostrow Mazowiecka to Castelnaudary | 1,124.16 mi (1,809.17 km) |
| Ostrow Mazowiecka to Castelsarrasin | 1,123.08 mi (1,807.43 km) |
| Ostrow Mazowiecka to Castres | 1,100.06 mi (1,770.38 km) |
| Ostrow Mazowiecka to Caudebec-les-Elbeuf | 935.37 mi (1,505.34 km) |
| Ostrow Mazowiecka to Caudry | 814.58 mi (1,310.93 km) |
