| Holyhead to Cividale del Friuli | 944.57 mi (1,520.14 km) |
| Holyhead to Civita Castellana | 1,092.29 mi (1,757.87 km) |
| Holyhead to Civitanova Marche | 1,085.67 mi (1,747.21 km) |
| Holyhead to Civitavecchia | 1,082.96 mi (1,742.85 km) |
| Holyhead to Civitella in Val di Chiana | 1,010.76 mi (1,626.66 km) |
| Holyhead to Clusone | 827.86 mi (1,332.32 km) |
| Holyhead to Coccaglio | 844.22 mi (1,358.65 km) |
| Holyhead to Codigoro | 954.04 mi (1,535.38 km) |
| Holyhead to Codogno | 854.78 mi (1,375.63 km) |
| Holyhead to Codroipo | 933.56 mi (1,502.43 km) |
| Holyhead to Cogoleto | 860.10 mi (1,384.19 km) |
| Holyhead to Colle di Val d'Elsa | 992.29 mi (1,596.94 km) |
| Holyhead to Colle Salvetti | 960.58 mi (1,545.91 km) |
| Holyhead to Collecchio | 892.55 mi (1,436.42 km) |
| Holyhead to Colleferro | 1,142.10 mi (1,838.03 km) |
