| Rhyl to Castle Rock (Colorado) | 4,512.35 mi (7,261.93 km) |
| Rhyl to Castro Valley (California) | 5,158.90 mi (8,302.44 km) |
| Rhyl to Catalina Foothills (Arizona) | 5,104.85 mi (8,215.47 km) |
| Rhyl to Cataño (Puerto Rico) | 4,081.92 mi (6,569.21 km) |
| Rhyl to Cathedral City (California) | 5,206.54 mi (8,379.11 km) |
| Rhyl to Catonsville (Maryland) | 3,465.07 mi (5,576.49 km) |
| Rhyl to Cave Spring (Virginia) | 3,690.78 mi (5,939.73 km) |
| Rhyl to Cayce (South Carolina) | 3,891.30 mi (6,262.44 km) |
| Rhyl to Cayey (Puerto Rico) | 4,100.21 mi (6,598.65 km) |
| Rhyl to Cedar City (Utah) | 4,880.51 mi (7,854.43 km) |
| Rhyl to Cedar Falls (Iowa) | 3,913.40 mi (6,298.01 km) |
| Rhyl to Cedar Hill (Texas) | 4,583.59 mi (7,376.57 km) |
| Rhyl to Cedar Lake (Indiana) | 3,782.46 mi (6,087.29 km) |
| Rhyl to Cedar Mill (Oregon) | 4,728.74 mi (7,610.17 km) |
| Rhyl to Cedar Park (Texas) | 4,725.54 mi (7,605.02 km) |
