| Westbrook to Smithville (Missouri) | 1,282.35 mi (2,063.74 km) |
| Westbrook to Smyrna (Delaware) | 407.80 mi (656.29 km) |
| Westbrook to Smyrna (Georgia) | 1,018.86 mi (1,639.69 km) |
| Westbrook to Smyrna (Tennessee) | 1,007.90 mi (1,622.06 km) |
| Westbrook to Snellville (Georgia) | 998.92 mi (1,607.61 km) |
| Westbrook to Snoqualmie (Washington) | 2,456.59 mi (3,953.50 km) |
| Westbrook to Snyder (Texas) | 1,810.78 mi (2,914.16 km) |
| Westbrook to Socastee (South Carolina) | 833.21 mi (1,340.93 km) |
| Westbrook to Socorro (Texas) | 2,112.49 mi (3,399.72 km) |
| Westbrook to Soddy-Daisy (Tennessee) | 979.69 mi (1,576.65 km) |
| Westbrook to Solana Beach (California) | 2,609.41 mi (4,199.43 km) |
| Westbrook to Soledad (California) | 2,698.76 mi (4,343.24 km) |
| Westbrook to Solon (Ohio) | 585.96 mi (943.02 km) |
| Westbrook to Somers Point (New Jersey) | 373.98 mi (601.86 km) |
| Westbrook to Somerset (Kentucky) | 876.60 mi (1,410.75 km) |
