| Merthyr Tudful to Corato | 1,186.04 mi (1,908.75 km) |
| Merthyr Tudful to Corbetta | 708.07 mi (1,139.53 km) |
| Merthyr Tudful to Corciano | 939.76 mi (1,512.40 km) |
| Merthyr Tudful to Cordenons | 829.60 mi (1,335.11 km) |
| Merthyr Tudful to Cori | 1,036.33 mi (1,667.81 km) |
| Merthyr Tudful to Coriano | 911.89 mi (1,467.55 km) |
| Merthyr Tudful to Corigliano Calabro | 1,267.84 mi (2,040.40 km) |
| Merthyr Tudful to Corleone | 1,256.77 mi (2,022.58 km) |
| Merthyr Tudful to Cormano | 713.27 mi (1,147.89 km) |
| Merthyr Tudful to Cornaredo | 710.73 mi (1,143.81 km) |
| Merthyr Tudful to Cornate d'Adda | 719.71 mi (1,158.25 km) |
| Merthyr Tudful to Cornedo Vicentino | 791.90 mi (1,274.44 km) |
| Merthyr Tudful to Correggio | 807.91 mi (1,300.20 km) |
| Merthyr Tudful to Corridonia | 979.13 mi (1,575.75 km) |
| Merthyr Tudful to Corsico | 716.81 mi (1,153.60 km) |
