| Walnut Park to Smithville (Missouri) | 1,358.39 mi (2,186.11 km) |
| Walnut Park to Smyrna (Delaware) | 2,369.21 mi (3,812.88 km) |
| Walnut Park to Smyrna (Georgia) | 1,923.72 mi (3,095.92 km) |
| Walnut Park to Smyrna (Tennessee) | 1,792.04 mi (2,884.02 km) |
| Walnut Park to Snellville (Georgia) | 1,952.80 mi (3,142.72 km) |
| Walnut Park to Snoqualmie (Washington) | 955.65 mi (1,537.98 km) |
| Walnut Park to Snyder (Texas) | 1,001.74 mi (1,612.15 km) |
| Walnut Park to Socastee (South Carolina) | 2,236.77 mi (3,599.73 km) |
| Walnut Park to Socorro (Texas) | 712.63 mi (1,146.87 km) |
| Walnut Park to Soddy-Daisy (Tennessee) | 1,872.70 mi (3,013.82 km) |
| Walnut Park to Solana Beach (California) | 87.28 mi (140.46 km) |
| Walnut Park to Soledad (California) | 245.49 mi (395.08 km) |
| Walnut Park to Solon (Ohio) | 2,059.06 mi (3,313.73 km) |
| Walnut Park to Somers Point (New Jersey) | 2,422.43 mi (3,898.53 km) |
| Walnut Park to Somerset (Kentucky) | 1,892.35 mi (3,045.45 km) |
