| Merthyr Tudful to Chickasha (Oklahoma) | 4,543.98 mi (7,312.82 km) |
| Merthyr Tudful to Chico (California) | 5,113.40 mi (8,229.21 km) |
| Merthyr Tudful to Chicopee (Massachusetts) | 3,202.66 mi (5,154.19 km) |
| Merthyr Tudful to Chillicothe (Ohio) | 3,749.09 mi (6,033.57 km) |
| Merthyr Tudful to Chillum (Maryland) | 3,521.67 mi (5,667.58 km) |
| Merthyr Tudful to Chino (California) | 5,308.87 mi (8,543.81 km) |
| Merthyr Tudful to Chino Hills (California) | 5,312.71 mi (8,549.99 km) |
| Merthyr Tudful to Chino Valley (Arizona) | 5,087.54 mi (8,187.61 km) |
| Merthyr Tudful to Chippewa Falls (Wisconsin) | 3,818.20 mi (6,144.81 km) |
| Merthyr Tudful to Choctaw (Oklahoma) | 4,495.61 mi (7,234.99 km) |
| Merthyr Tudful to Chowchilla (California) | 5,215.28 mi (8,393.18 km) |
| Merthyr Tudful to Christiansburg (Virginia) | 3,745.01 mi (6,027.01 km) |
| Merthyr Tudful to Chubbuck (Idaho) | 4,647.20 mi (7,478.94 km) |
| Merthyr Tudful to Chula Vista (California) | 5,363.35 mi (8,631.47 km) |
| Merthyr Tudful to Cibolo (Texas) | 4,836.42 mi (7,783.47 km) |
