| Firminy to Coudekerque-Branche | 399.12 mi (642.31 km) |
| Firminy to Coueron | 313.33 mi (504.25 km) |
| Firminy to Coulommiers | 243.48 mi (391.84 km) |
| Firminy to Courbevoic | 260.63 mi (419.45 km) |
| Firminy to Courcouronnes | 240.08 mi (386.37 km) |
| Firminy to Cournon-d'Auvergne | 58.12 mi (93.54 km) |
| Firminy to Courrieres | 355.74 mi (572.51 km) |
| Firminy to Coutras | 216.25 mi (348.03 km) |
| Firminy to Couzeix | 151.09 mi (243.16 km) |
| Firminy to Cran-Gevrier | 94.70 mi (152.41 km) |
| Firminy to Craponne | 32.47 mi (52.25 km) |
| Firminy to Creil | 280.41 mi (451.28 km) |
| Firminy to Crepy-en-Valois | 273.71 mi (440.49 km) |
| Firminy to Crest | 58.01 mi (93.36 km) |
| Firminy to Creteil | 250.28 mi (402.78 km) |
