| Romulus to Coudekerque-Branche | 3,880.14 mi (6,244.48 km) |
| Romulus to Coueron | 3,835.12 mi (6,172.03 km) |
| Romulus to Coulommiers | 3,979.15 mi (6,403.82 km) |
| Romulus to Courbevoic | 3,943.29 mi (6,346.12 km) |
| Romulus to Courcouronnes | 3,959.38 mi (6,372.01 km) |
| Romulus to Cournon-d'Auvergne | 4,089.18 mi (6,580.90 km) |
| Romulus to Courrieres | 3,919.80 mi (6,308.32 km) |
| Romulus to Coutras | 3,973.56 mi (6,394.82 km) |
| Romulus to Couzeix | 4,002.91 mi (6,442.07 km) |
| Romulus to Cran-Gevrier | 4,202.97 mi (6,764.03 km) |
| Romulus to Craponne | 4,152.15 mi (6,682.24 km) |
| Romulus to Creil | 3,940.63 mi (6,341.83 km) |
| Romulus to Crepy-en-Valois | 3,957.45 mi (6,368.90 km) |
| Romulus to Crest | 4,201.44 mi (6,761.57 km) |
| Romulus to Creteil | 3,955.19 mi (6,365.26 km) |
