| Monroe to Smyrna (Delaware) | 1,031.53 mi (1,660.08 km) |
| Monroe to Smyrna (Georgia) | 446.81 mi (719.07 km) |
| Monroe to Smyrna (Tennessee) | 396.55 mi (638.19 km) |
| Monroe to Snellville (Georgia) | 475.77 mi (765.67 km) |
| Monroe to Snoqualmie (Washington) | 1,867.60 mi (3,005.61 km) |
| Monroe to Snyder (Texas) | 514.16 mi (827.45 km) |
| Monroe to Socastee (South Carolina) | 760.19 mi (1,223.40 km) |
| Monroe to Socorro (Texas) | 831.92 mi (1,338.85 km) |
| Monroe to Soddy-Daisy (Tennessee) | 438.70 mi (706.02 km) |
| Monroe to Solana Beach (California) | 1,459.98 mi (2,349.61 km) |
| Monroe to Soledad (California) | 1,682.09 mi (2,707.07 km) |
| Monroe to Solon (Ohio) | 847.45 mi (1,363.84 km) |
| Monroe to Somers Point (New Jersey) | 1,082.07 mi (1,741.42 km) |
| Monroe to Somerset (Kentucky) | 527.84 mi (849.47 km) |
| Monroe to Somerset (New Jersey) | 1,118.33 mi (1,799.78 km) |
