| Helsinki to Chitila | 1,083.04 mi (1,742.98 km) |
| Helsinki to Cisnadie | 999.47 mi (1,608.49 km) |
| Helsinki to Cluj-Napoca | 927.76 mi (1,493.08 km) |
| Helsinki to Codlea | 1,000.26 mi (1,609.77 km) |
| Helsinki to Comanesti | 951.41 mi (1,531.14 km) |
| Helsinki to Comarnic | 1,031.25 mi (1,659.64 km) |
| Helsinki to Constanta | 1,116.38 mi (1,796.64 km) |
| Helsinki to Corabia | 1,133.08 mi (1,823.52 km) |
| Helsinki to Costesti | 1,071.02 mi (1,723.65 km) |
| Helsinki to Covasna | 990.84 mi (1,594.60 km) |
| Helsinki to Craiova | 1,095.25 mi (1,762.64 km) |
| Helsinki to Cristuru Secuiesc | 958.96 mi (1,543.30 km) |
| Helsinki to Cugir | 992.00 mi (1,596.47 km) |
| Helsinki to Cumpana | 1,119.64 mi (1,801.89 km) |
| Helsinki to Curtea de Arges | 1,038.64 mi (1,671.53 km) |
