| Holyhead to Cernavoda | 1,592.51 mi (2,562.90 km) |
| Holyhead to Chitila | 1,502.55 mi (2,418.11 km) |
| Holyhead to Cisnadie | 1,382.07 mi (2,224.22 km) |
| Holyhead to Cluj-Napoca | 1,320.83 mi (2,125.67 km) |
| Holyhead to Codlea | 1,435.24 mi (2,309.79 km) |
| Holyhead to Comanesti | 1,449.96 mi (2,333.48 km) |
| Holyhead to Comarnic | 1,459.74 mi (2,349.23 km) |
| Holyhead to Constanta | 1,623.66 mi (2,613.04 km) |
| Holyhead to Corabia | 1,472.78 mi (2,370.22 km) |
| Holyhead to Costesti | 1,451.66 mi (2,336.22 km) |
| Holyhead to Covasna | 1,459.90 mi (2,349.48 km) |
| Holyhead to Craiova | 1,422.39 mi (2,289.12 km) |
| Holyhead to Cristuru Secuiesc | 1,396.92 mi (2,248.13 km) |
| Holyhead to Cugir | 1,345.27 mi (2,165.00 km) |
| Holyhead to Cumpana | 1,622.63 mi (2,611.38 km) |
