| Darby to Smyrna (Delaware) | 47.13 mi (75.85 km) |
| Darby to Smyrna (Georgia) | 660.24 mi (1,062.55 km) |
| Darby to Smyrna (Tennessee) | 671.17 mi (1,080.14 km) |
| Darby to Snellville (Georgia) | 638.95 mi (1,028.30 km) |
| Darby to Snoqualmie (Washington) | 2,347.40 mi (3,777.78 km) |
| Darby to Snyder (Texas) | 1,506.02 mi (2,423.71 km) |
| Darby to Socastee (South Carolina) | 477.90 mi (769.10 km) |
| Darby to Socorro (Texas) | 1,818.71 mi (2,926.93 km) |
| Darby to Soddy-Daisy (Tennessee) | 630.61 mi (1,014.87 km) |
| Darby to Solana Beach (California) | 2,359.98 mi (3,798.02 km) |
| Darby to Soledad (California) | 2,486.50 mi (4,001.64 km) |
| Darby to Solon (Ohio) | 339.26 mi (545.99 km) |
| Darby to Somers Point (New Jersey) | 54.37 mi (87.50 km) |
| Darby to Somerset (Kentucky) | 541.90 mi (872.11 km) |
| Darby to Somerset (New Jersey) | 57.05 mi (91.81 km) |
