| Portimao to Coudekerque-Branche | 1,099.63 mi (1,769.68 km) |
| Portimao to Coueron | 778.18 mi (1,252.36 km) |
| Portimao to Coulommiers | 995.69 mi (1,602.42 km) |
| Portimao to Courbevoic | 976.38 mi (1,571.33 km) |
| Portimao to Courcouronnes | 966.50 mi (1,555.43 km) |
| Portimao to Cournon-d'Auvergne | 848.59 mi (1,365.68 km) |
| Portimao to Courrieres | 1,081.27 mi (1,740.13 km) |
| Portimao to Coutras | 699.18 mi (1,125.23 km) |
| Portimao to Couzeix | 786.50 mi (1,265.75 km) |
| Portimao to Cran-Gevrier | 967.22 mi (1,556.59 km) |
| Portimao to Craponne | 906.47 mi (1,458.82 km) |
| Portimao to Creil | 1,002.48 mi (1,613.33 km) |
| Portimao to Crepy-en-Valois | 1,012.41 mi (1,629.32 km) |
| Portimao to Crest | 879.07 mi (1,414.72 km) |
| Portimao to Creteil | 976.47 mi (1,571.47 km) |
