| Gateway to Smyrna (Delaware) | 947.16 mi (1,524.30 km) |
| Gateway to Smyrna (Georgia) | 529.72 mi (852.50 km) |
| Gateway to Smyrna (Tennessee) | 707.26 mi (1,138.23 km) |
| Gateway to Snellville (Georgia) | 520.52 mi (837.69 km) |
| Gateway to Snoqualmie (Washington) | 2,600.03 mi (4,184.34 km) |
| Gateway to Snyder (Texas) | 1,224.24 mi (1,970.23 km) |
| Gateway to Socastee (South Carolina) | 517.53 mi (832.89 km) |
| Gateway to Socorro (Texas) | 1,517.09 mi (2,441.53 km) |
| Gateway to Soddy-Daisy (Tennessee) | 632.97 mi (1,018.66 km) |
| Gateway to Solana Beach (California) | 2,164.50 mi (3,483.42 km) |
| Gateway to Soledad (California) | 2,411.48 mi (3,880.90 km) |
| Gateway to Solon (Ohio) | 1,023.23 mi (1,646.72 km) |
| Gateway to Somers Point (New Jersey) | 971.67 mi (1,563.75 km) |
| Gateway to Somerset (Kentucky) | 744.90 mi (1,198.79 km) |
| Gateway to Somerset (New Jersey) | 1,047.93 mi (1,686.48 km) |
