| Rhondda to Camas (Washington) | 4,805.61 mi (7,733.88 km) |
| Rhondda to Cambridge (Maryland) | 3,503.76 mi (5,638.76 km) |
| Rhondda to Cambridge (Massachusetts) | 3,135.63 mi (5,046.31 km) |
| Rhondda to Camden (Arkansas) | 4,421.12 mi (7,115.10 km) |
| Rhondda to Camden (New Jersey) | 3,402.83 mi (5,476.32 km) |
| Rhondda to Cameron Park (California) | 5,154.75 mi (8,295.77 km) |
| Rhondda to Camp Pendleton South (California) | 5,346.19 mi (8,603.86 km) |
| Rhondda to Camp Springs (Maryland) | 3,527.23 mi (5,676.53 km) |
| Rhondda to Camp Verde (Arizona) | 5,082.36 mi (8,179.26 km) |
| Rhondda to Campbell (California) | 5,263.92 mi (8,471.47 km) |
| Rhondda to Campbellsville (Kentucky) | 3,937.72 mi (6,337.15 km) |
| Rhondda to Campton Hills (Illinois) | 3,845.01 mi (6,187.94 km) |
| Rhondda to Canby (Oregon) | 4,831.69 mi (7,775.86 km) |
| Rhondda to Candelaria (Puerto Rico) | 4,068.41 mi (6,547.47 km) |
| Rhondda to Candler-McAfee (Georgia) | 4,066.02 mi (6,543.63 km) |
