| Helston to Cernavoda | 1,598.26 mi (2,572.15 km) |
| Helston to Chitila | 1,502.21 mi (2,417.57 km) |
| Helston to Cisnadie | 1,386.32 mi (2,231.07 km) |
| Helston to Cluj-Napoca | 1,333.95 mi (2,146.78 km) |
| Helston to Codlea | 1,444.06 mi (2,323.99 km) |
| Helston to Comanesti | 1,469.31 mi (2,364.63 km) |
| Helston to Comarnic | 1,464.99 mi (2,357.67 km) |
| Helston to Constanta | 1,630.10 mi (2,623.40 km) |
| Helston to Corabia | 1,459.89 mi (2,349.47 km) |
| Helston to Costesti | 1,448.57 mi (2,331.24 km) |
| Helston to Covasna | 1,472.78 mi (2,370.22 km) |
| Helston to Craiova | 1,411.85 mi (2,272.15 km) |
| Helston to Cristuru Secuiesc | 1,410.17 mi (2,269.45 km) |
| Helston to Cugir | 1,347.89 mi (2,169.22 km) |
| Helston to Cumpana | 1,628.34 mi (2,620.56 km) |
