| Rhondda to Clacton-on-Sea | 195.74 mi (315.01 km) |
| Rhondda to Clay Cross | 136.31 mi (219.36 km) |
| Rhondda to Clayton | 164.03 mi (263.98 km) |
| Rhondda to Clayton le Moors | 155.33 mi (249.97 km) |
| Rhondda to Cleckheaton | 162.16 mi (260.97 km) |
| Rhondda to Cleethorpes | 195.52 mi (314.66 km) |
| Rhondda to Clevedon | 27.16 mi (43.71 km) |
| Rhondda to Clifton | 129.98 mi (209.19 km) |
| Rhondda to Clifton | 189.44 mi (304.87 km) |
| Rhondda to Cliftonville | 207.96 mi (334.67 km) |
| Rhondda to Clitheroe | 161.62 mi (260.09 km) |
| Rhondda to Clydebank | 298.69 mi (480.69 km) |
| Rhondda to Coalville | 115.74 mi (186.26 km) |
| Rhondda to Coatbridge | 294.46 mi (473.89 km) |
| Rhondda to Cobham | 130.98 mi (210.79 km) |
