| Rhondda to Cascais | 938.25 mi (1,509.97 km) |
| Rhondda to Castelo Branco | 838.35 mi (1,349.20 km) |
| Rhondda to Castro Daire | 770.80 mi (1,240.48 km) |
| Rhondda to Celorico de Basto | 739.46 mi (1,190.04 km) |
| Rhondda to Chamusca | 881.76 mi (1,419.05 km) |
| Rhondda to Chaves | 708.57 mi (1,140.34 km) |
| Rhondda to Cinfaes | 760.17 mi (1,223.37 km) |
| Rhondda to Coimbra | 823.50 mi (1,325.30 km) |
| Rhondda to Condeixa-a-Nova | 830.78 mi (1,337.01 km) |
| Rhondda to Corroios | 940.05 mi (1,512.86 km) |
| Rhondda to Coruche | 908.66 mi (1,462.35 km) |
| Rhondda to Costa de Caparica | 939.27 mi (1,511.62 km) |
| Rhondda to Covilha | 806.86 mi (1,298.52 km) |
| Rhondda to Eiras | 821.36 mi (1,321.85 km) |
| Rhondda to Elvas | 899.10 mi (1,446.95 km) |
