| Mainz to Coudekerque-Branche | 267.94 mi (431.21 km) |
| Mainz to Coueron | 494.39 mi (795.64 km) |
| Mainz to Coulommiers | 246.56 mi (396.81 km) |
| Mainz to Courbevoic | 280.30 mi (451.10 km) |
| Mainz to Courcouronnes | 279.16 mi (449.27 km) |
| Mainz to Cournon-d'Auvergne | 375.44 mi (604.21 km) |
| Mainz to Courrieres | 237.39 mi (382.04 km) |
| Mainz to Coutras | 519.18 mi (835.53 km) |
| Mainz to Couzeix | 431.41 mi (694.28 km) |
| Mainz to Cran-Gevrier | 299.09 mi (481.34 km) |
| Mainz to Craponne | 335.65 mi (540.17 km) |
| Mainz to Creil | 263.61 mi (424.23 km) |
| Mainz to Crepy-en-Valois | 246.28 mi (396.35 km) |
| Mainz to Crest | 393.47 mi (633.23 km) |
| Mainz to Creteil | 273.64 mi (440.38 km) |
