| Canals to Smyrna (Delaware) | 3,895.28 mi (6,268.85 km) |
| Canals to Smyrna (Georgia) | 4,508.48 mi (7,255.70 km) |
| Canals to Smyrna (Tennessee) | 4,529.24 mi (7,289.11 km) |
| Canals to Snellville (Georgia) | 4,483.65 mi (7,215.74 km) |
| Canals to Snoqualmie (Washington) | 5,456.02 mi (8,780.61 km) |
| Canals to Snyder (Texas) | 5,329.96 mi (8,577.74 km) |
| Canals to Socastee (South Carolina) | 4,242.74 mi (6,828.03 km) |
| Canals to Socorro (Texas) | 5,618.43 mi (9,042.00 km) |
| Canals to Soddy-Daisy (Tennessee) | 4,490.08 mi (7,226.08 km) |
| Canals to Solana Beach (California) | 6,021.72 mi (9,691.02 km) |
| Canals to Soledad (California) | 6,006.00 mi (9,665.73 km) |
| Canals to Solon (Ohio) | 4,106.92 mi (6,609.45 km) |
| Canals to Somers Point (New Jersey) | 3,846.20 mi (6,189.86 km) |
| Canals to Somerset (Kentucky) | 4,398.43 mi (7,078.58 km) |
| Canals to Somerset (New Jersey) | 3,806.65 mi (6,126.21 km) |
