| Merthyr Tudful to Celano | 1,036.75 mi (1,668.49 km) |
| Merthyr Tudful to Cento | 828.06 mi (1,332.64 km) |
| Merthyr Tudful to Cepagatti | 1,041.40 mi (1,675.97 km) |
| Merthyr Tudful to Ceprano | 1,062.21 mi (1,709.47 km) |
| Merthyr Tudful to Cercola | 1,126.28 mi (1,812.58 km) |
| Merthyr Tudful to Cerea | 804.76 mi (1,295.14 km) |
| Merthyr Tudful to Cerese | 794.01 mi (1,277.83 km) |
| Merthyr Tudful to Cerignola | 1,161.94 mi (1,869.97 km) |
| Merthyr Tudful to Cermenate | 703.41 mi (1,132.03 km) |
| Merthyr Tudful to Cernusco sul Naviglio | 720.84 mi (1,160.08 km) |
| Merthyr Tudful to Cerreto Guidi | 859.10 mi (1,382.58 km) |
| Merthyr Tudful to Cerro Maggiore | 703.12 mi (1,131.57 km) |
| Merthyr Tudful to Certaldo | 875.38 mi (1,408.78 km) |
| Merthyr Tudful to Cerveteri | 990.07 mi (1,593.36 km) |
| Merthyr Tudful to Cervia | 889.47 mi (1,431.46 km) |
