| Royal Palm Beach to Smyrna (Delaware) | 909.69 mi (1,464.01 km) |
| Royal Palm Beach to Smyrna (Georgia) | 556.88 mi (896.22 km) |
| Royal Palm Beach to Smyrna (Tennessee) | 739.89 mi (1,190.74 km) |
| Royal Palm Beach to Snellville (Georgia) | 543.08 mi (874.01 km) |
| Royal Palm Beach to Snoqualmie (Washington) | 2,661.28 mi (4,282.92 km) |
| Royal Palm Beach to Snyder (Texas) | 1,306.43 mi (2,102.49 km) |
| Royal Palm Beach to Socastee (South Carolina) | 487.92 mi (785.22 km) |
| Royal Palm Beach to Socorro (Texas) | 1,603.22 mi (2,580.13 km) |
| Royal Palm Beach to Soddy-Daisy (Tennessee) | 659.45 mi (1,061.29 km) |
| Royal Palm Beach to Solana Beach (California) | 2,249.58 mi (3,620.36 km) |
| Royal Palm Beach to Soledad (California) | 2,491.95 mi (4,010.41 km) |
| Royal Palm Beach to Solon (Ohio) | 1,016.83 mi (1,636.43 km) |
| Royal Palm Beach to Somers Point (New Jersey) | 929.73 mi (1,496.25 km) |
| Royal Palm Beach to Somerset (Kentucky) | 761.67 mi (1,225.79 km) |
| Royal Palm Beach to Somerset (New Jersey) | 1,008.44 mi (1,622.92 km) |
