| Rhondda to Cividale del Friuli | 852.87 mi (1,372.56 km) |
| Rhondda to Civita Castellana | 982.07 mi (1,580.48 km) |
| Rhondda to Civitanova Marche | 982.01 mi (1,580.39 km) |
| Rhondda to Civitavecchia | 970.74 mi (1,562.26 km) |
| Rhondda to Civitella in Val di Chiana | 902.34 mi (1,452.17 km) |
| Rhondda to Clusone | 724.76 mi (1,166.38 km) |
| Rhondda to Coccaglio | 739.62 mi (1,190.30 km) |
| Rhondda to Codigoro | 852.25 mi (1,371.56 km) |
| Rhondda to Codogno | 747.51 mi (1,203.01 km) |
| Rhondda to Codroipo | 839.82 mi (1,351.57 km) |
| Rhondda to Cogoleto | 746.83 mi (1,201.91 km) |
| Rhondda to Colle di Val d'Elsa | 882.31 mi (1,419.94 km) |
| Rhondda to Colle Salvetti | 849.57 mi (1,367.26 km) |
| Rhondda to Collecchio | 785.04 mi (1,263.39 km) |
| Rhondda to Colleferro | 1,031.73 mi (1,660.40 km) |
