| Rhondda to Salisbury (New York) | 3,304.26 mi (5,317.69 km) |
| Rhondda to Salisbury (North Carolina) | 3,817.91 mi (6,144.34 km) |
| Rhondda to Salmon Creek (Washington) | 4,805.95 mi (7,734.43 km) |
| Rhondda to Salt Lake City (Utah) | 4,749.22 mi (7,643.14 km) |
| Rhondda to Sammamish (Washington) | 4,682.60 mi (7,535.91 km) |
| Rhondda to San Angelo (Texas) | 4,828.05 mi (7,769.99 km) |
| Rhondda to San Anselmo (California) | 5,242.65 mi (8,437.23 km) |
| Rhondda to San Antonio (Texas) | 4,855.82 mi (7,814.68 km) |
| Rhondda to San Benito (Texas) | 4,995.03 mi (8,038.72 km) |
| Rhondda to San Bernardino (California) | 5,291.85 mi (8,516.41 km) |
| Rhondda to San Bruno (California) | 5,258.84 mi (8,463.28 km) |
| Rhondda to San Buenaventura (California) | 5,348.39 mi (8,607.40 km) |
| Rhondda to San Carlos (California) | 5,261.12 mi (8,466.95 km) |
| Rhondda to San Carlos Park (Florida) | 4,320.71 mi (6,953.52 km) |
| Rhondda to San Clemente (California) | 5,341.27 mi (8,595.94 km) |
