| Rhondda to Castelfidardo | 967.44 mi (1,556.95 km) |
| Rhondda to Castelfiorentino | 866.64 mi (1,394.72 km) |
| Rhondda to Castelfranco di Sopra | 886.70 mi (1,427.01 km) |
| Rhondda to Castelfranco di Sotto | 854.08 mi (1,374.51 km) |
| Rhondda to Castelfranco Emilia | 822.78 mi (1,324.14 km) |
| Rhondda to Castelfranco Veneto | 810.14 mi (1,303.80 km) |
| Rhondda to Castellabate | 1,174.01 mi (1,889.39 km) |
| Rhondda to Castellammare del Golfo | 1,227.02 mi (1,974.70 km) |
| Rhondda to Castellammare di Stabia | 1,136.05 mi (1,828.29 km) |
| Rhondda to Castellamonte | 665.93 mi (1,071.72 km) |
| Rhondda to Castellana Grotte | 1,224.59 mi (1,970.79 km) |
| Rhondda to Castellaneta | 1,228.01 mi (1,976.30 km) |
| Rhondda to Castellanza | 697.33 mi (1,122.25 km) |
| Rhondda to Castellarano | 814.22 mi (1,310.36 km) |
| Rhondda to Castelleone | 743.41 mi (1,196.40 km) |
