| Rhondda to Coudekerque-Branche | 254.07 mi (408.89 km) |
| Rhondda to Coueron | 313.41 mi (504.38 km) |
| Rhondda to Coulommiers | 346.28 mi (557.29 km) |
| Rhondda to Courbevoic | 312.93 mi (503.61 km) |
| Rhondda to Courcouronnes | 331.23 mi (533.07 km) |
| Rhondda to Cournon-d'Auvergne | 505.29 mi (813.18 km) |
| Rhondda to Courrieres | 287.76 mi (463.10 km) |
| Rhondda to Coutras | 478.63 mi (770.27 km) |
| Rhondda to Couzeix | 449.53 mi (723.45 km) |
| Rhondda to Cran-Gevrier | 585.53 mi (942.31 km) |
| Rhondda to Craponne | 549.30 mi (884.01 km) |
| Rhondda to Creil | 306.40 mi (493.10 km) |
| Rhondda to Crepy-en-Valois | 322.48 mi (518.99 km) |
| Rhondda to Crest | 613.75 mi (987.73 km) |
| Rhondda to Creteil | 324.98 mi (523.00 km) |
