| Merthyr Tudful to Castrovillari | 1,245.45 mi (2,004.36 km) |
| Merthyr Tudful to Catania | 1,331.57 mi (2,142.96 km) |
| Merthyr Tudful to Catanzaro | 1,307.09 mi (2,103.55 km) |
| Merthyr Tudful to Cattolica | 916.85 mi (1,475.52 km) |
| Merthyr Tudful to Cava de' Tirreni | 1,147.12 mi (1,846.11 km) |
| Merthyr Tudful to Cavallino | 1,293.49 mi (2,081.67 km) |
| Merthyr Tudful to Cavarzere | 840.29 mi (1,352.32 km) |
| Merthyr Tudful to Cave | 1,028.26 mi (1,654.82 km) |
| Merthyr Tudful to Cavriago | 802.07 mi (1,290.81 km) |
| Merthyr Tudful to Cavriglia | 892.55 mi (1,436.42 km) |
| Merthyr Tudful to Cazzago San Martino | 743.42 mi (1,196.42 km) |
| Merthyr Tudful to Ceccano | 1,054.94 mi (1,697.76 km) |
| Merthyr Tudful to Cecina | 868.65 mi (1,397.96 km) |
| Merthyr Tudful to Cefalu | 1,267.18 mi (2,039.33 km) |
| Merthyr Tudful to Ceglie Messapico | 1,251.16 mi (2,013.55 km) |
