| Porthcawl to Cividale del Friuli | 860.80 mi (1,385.32 km) |
| Porthcawl to Civita Castellana | 986.46 mi (1,587.56 km) |
| Porthcawl to Civitanova Marche | 987.80 mi (1,589.71 km) |
| Porthcawl to Civitavecchia | 974.66 mi (1,568.57 km) |
| Porthcawl to Civitella in Val di Chiana | 907.19 mi (1,459.99 km) |
| Porthcawl to Clusone | 730.87 mi (1,176.22 km) |
| Porthcawl to Coccaglio | 745.42 mi (1,199.64 km) |
| Porthcawl to Codigoro | 858.49 mi (1,381.61 km) |
| Porthcawl to Codogno | 752.75 mi (1,211.44 km) |
| Porthcawl to Codroipo | 847.45 mi (1,363.84 km) |
| Porthcawl to Cogoleto | 750.64 mi (1,208.05 km) |
| Porthcawl to Colle di Val d'Elsa | 886.82 mi (1,427.20 km) |
| Porthcawl to Colle Salvetti | 853.87 mi (1,374.17 km) |
| Porthcawl to Collecchio | 790.19 mi (1,271.68 km) |
| Porthcawl to Colleferro | 1,036.06 mi (1,667.38 km) |
