| Ostrow Mazowiecka to Coudekerque-Branche | 837.79 mi (1,348.30 km) |
| Ostrow Mazowiecka to Coueron | 1,111.52 mi (1,788.81 km) |
| Ostrow Mazowiecka to Coulommiers | 863.48 mi (1,389.63 km) |
| Ostrow Mazowiecka to Courbevoic | 895.18 mi (1,440.65 km) |
| Ostrow Mazowiecka to Courcouronnes | 896.09 mi (1,442.12 km) |
| Ostrow Mazowiecka to Cournon-d'Auvergne | 969.82 mi (1,560.78 km) |
| Ostrow Mazowiecka to Courrieres | 826.27 mi (1,329.75 km) |
| Ostrow Mazowiecka to Coutras | 1,128.33 mi (1,815.87 km) |
| Ostrow Mazowiecka to Couzeix | 1,040.86 mi (1,675.10 km) |
| Ostrow Mazowiecka to Cran-Gevrier | 852.97 mi (1,372.73 km) |
| Ostrow Mazowiecka to Craponne | 911.47 mi (1,466.87 km) |
| Ostrow Mazowiecka to Creil | 875.44 mi (1,408.88 km) |
| Ostrow Mazowiecka to Crepy-en-Valois | 859.42 mi (1,383.09 km) |
| Ostrow Mazowiecka to Crest | 945.87 mi (1,522.24 km) |
| Ostrow Mazowiecka to Creteil | 889.69 mi (1,431.82 km) |
