| Firminy to Chitila | 1,059.40 mi (1,704.94 km) |
| Firminy to Cisnadie | 958.89 mi (1,543.18 km) |
| Firminy to Cluj-Napoca | 927.38 mi (1,492.47 km) |
| Firminy to Codlea | 1,021.04 mi (1,643.21 km) |
| Firminy to Comanesti | 1,064.41 mi (1,713.00 km) |
| Firminy to Comarnic | 1,034.15 mi (1,664.30 km) |
| Firminy to Constanta | 1,192.48 mi (1,919.11 km) |
| Firminy to Corabia | 998.45 mi (1,606.85 km) |
| Firminy to Costesti | 1,004.06 mi (1,615.88 km) |
| Firminy to Covasna | 1,055.41 mi (1,698.51 km) |
| Firminy to Craiova | 956.87 mi (1,539.93 km) |
| Firminy to Cristuru Secuiesc | 997.80 mi (1,605.80 km) |
| Firminy to Cugir | 920.27 mi (1,481.04 km) |
| Firminy to Cumpana | 1,189.55 mi (1,914.40 km) |
| Firminy to Curtea de Arges | 989.17 mi (1,591.92 km) |
