| Merthyr Tudful to Butzbach | 529.62 mi (852.34 km) |
| Merthyr Tudful to Buxtehude | 560.81 mi (902.54 km) |
| Merthyr Tudful to Cadolzburg | 643.38 mi (1,035.42 km) |
| Merthyr Tudful to Calbe | 646.08 mi (1,039.77 km) |
| Merthyr Tudful to Calw | 573.84 mi (923.51 km) |
| Merthyr Tudful to Castrop-Rauxel | 458.30 mi (737.56 km) |
| Merthyr Tudful to Celle | 572.63 mi (921.55 km) |
| Merthyr Tudful to Cham | 724.38 mi (1,165.77 km) |
| Merthyr Tudful to Chemnitz | 705.43 mi (1,135.28 km) |
| Merthyr Tudful to Clausthal-Zellerfeld | 585.44 mi (942.18 km) |
| Merthyr Tudful to Cloppenburg | 488.38 mi (785.97 km) |
| Merthyr Tudful to Coburg | 630.89 mi (1,015.31 km) |
| Merthyr Tudful to Coesfeld | 449.92 mi (724.08 km) |
| Merthyr Tudful to Cologne | 448.99 mi (722.58 km) |
| Merthyr Tudful to Coswig | 730.08 mi (1,174.96 km) |
