| Rhyl to Security-Widefield (Colorado) | 4,540.72 mi (7,307.58 km) |
| Rhyl to Sedalia (Missouri) | 4,129.55 mi (6,645.87 km) |
| Rhyl to Sedro-Woolley (Washington) | 4,544.21 mi (7,313.19 km) |
| Rhyl to Seguin (Texas) | 4,780.17 mi (7,692.94 km) |
| Rhyl to Selden (New York) | 3,244.73 mi (5,221.88 km) |
| Rhyl to Selma (Alabama) | 4,206.85 mi (6,770.28 km) |
| Rhyl to Selma (California) | 5,150.32 mi (8,288.63 km) |
| Rhyl to Selma (Texas) | 4,793.52 mi (7,714.42 km) |
| Rhyl to Seminole (Florida) | 4,269.72 mi (6,871.44 km) |
| Rhyl to Seven Hills (Ohio) | 3,561.59 mi (5,731.82 km) |
| Rhyl to Seven Oaks (South Carolina) | 3,890.33 mi (6,260.89 km) |
| Rhyl to Severn (Maryland) | 3,469.16 mi (5,583.07 km) |
| Rhyl to Severna Park (Maryland) | 3,466.33 mi (5,578.53 km) |
| Rhyl to Sevierville (Tennessee) | 3,896.69 mi (6,271.12 km) |
| Rhyl to Seymour (Indiana) | 3,839.06 mi (6,178.38 km) |
