| Upper Grand Lagoon to Smithville (Missouri) | 809.88 mi (1,303.38 km) |
| Upper Grand Lagoon to Smyrna (Delaware) | 852.35 mi (1,371.72 km) |
| Upper Grand Lagoon to Smyrna (Georgia) | 265.12 mi (426.67 km) |
| Upper Grand Lagoon to Smyrna (Tennessee) | 403.29 mi (649.03 km) |
| Upper Grand Lagoon to Snellville (Georgia) | 274.32 mi (441.47 km) |
| Upper Grand Lagoon to Snoqualmie (Washington) | 2,253.14 mi (3,626.07 km) |
| Upper Grand Lagoon to Snyder (Texas) | 910.57 mi (1,465.41 km) |
| Upper Grand Lagoon to Socastee (South Carolina) | 463.44 mi (745.83 km) |
| Upper Grand Lagoon to Socorro (Texas) | 1,218.91 mi (1,961.65 km) |
| Upper Grand Lagoon to Soddy-Daisy (Tennessee) | 353.09 mi (568.25 km) |
| Upper Grand Lagoon to Solana Beach (California) | 1,858.41 mi (2,990.81 km) |
| Upper Grand Lagoon to Soledad (California) | 2,088.69 mi (3,361.42 km) |
| Upper Grand Lagoon to Solon (Ohio) | 811.38 mi (1,305.79 km) |
| Upper Grand Lagoon to Somers Point (New Jersey) | 892.52 mi (1,436.38 km) |
| Upper Grand Lagoon to Somerset (Kentucky) | 482.13 mi (775.91 km) |
