| Rhondda to Culpeper (Virginia) | 3,586.67 mi (5,772.18 km) |
| Rhondda to Culver City (California) | 5,336.11 mi (8,587.65 km) |
| Rhondda to Cumberland (Maryland) | 3,565.03 mi (5,737.37 km) |
| Rhondda to Cupertino (California) | 5,264.69 mi (8,472.70 km) |
| Rhondda to Cutler Bay (Florida) | 4,303.01 mi (6,925.02 km) |
| Rhondda to Cutlerville (Michigan) | 3,698.84 mi (5,952.71 km) |
| Rhondda to Cuyahoga Falls (Ohio) | 3,609.61 mi (5,809.11 km) |
| Rhondda to Cypress (California) | 5,334.88 mi (8,585.66 km) |
| Rhondda to Cypress Gardens (Florida) | 4,238.60 mi (6,821.37 km) |
| Rhondda to Cypress Lake (Florida) | 4,320.98 mi (6,953.94 km) |
| Rhondda to D'Iberville (Mississippi) | 4,416.38 mi (7,107.47 km) |
| Rhondda to Dakota Ridge (Colorado) | 4,577.52 mi (7,366.81 km) |
| Rhondda to Dale City (Virginia) | 3,551.82 mi (5,716.10 km) |
| Rhondda to Dallas (Georgia) | 4,080.33 mi (6,566.66 km) |
| Rhondda to Dallas (Oregon) | 4,868.64 mi (7,835.32 km) |
