| Rhyl to Carson (California) | 5,264.41 mi (8,472.24 km) |
| Rhyl to Carson City (Nevada) | 5,006.60 mi (8,057.34 km) |
| Rhyl to Carteret (New Jersey) | 3,304.75 mi (5,318.48 km) |
| Rhyl to Cartersville (Georgia) | 4,030.53 mi (6,486.51 km) |
| Rhyl to Carthage (Missouri) | 4,248.47 mi (6,837.24 km) |
| Rhyl to Cary (Illinois) | 3,772.97 mi (6,072.01 km) |
| Rhyl to Cary (North Carolina) | 3,712.48 mi (5,974.66 km) |
| Rhyl to Casa de Oro-Mount Helix (California) | 5,284.10 mi (8,503.95 km) |
| Rhyl to Casa Grande (Arizona) | 5,101.58 mi (8,210.20 km) |
| Rhyl to Casas Adobes (Arizona) | 5,107.17 mi (8,219.20 km) |
| Rhyl to Cascades (Virginia) | 3,500.85 mi (5,634.07 km) |
| Rhyl to Casper (Wyoming) | 4,379.44 mi (7,048.03 km) |
| Rhyl to Casselberry (Florida) | 4,168.12 mi (6,707.94 km) |
| Rhyl to Castaic (California) | 5,239.45 mi (8,432.08 km) |
| Rhyl to Castle Pines (Colorado) | 4,508.39 mi (7,255.55 km) |
