| San Marino to Storm Lake (Iowa) | 1,367.86 mi (2,201.35 km) |
| San Marino to Storrs (Connecticut) | 2,523.13 mi (4,060.59 km) |
| San Marino to Stoughton (Wisconsin) | 1,665.68 mi (2,680.65 km) |
| San Marino to Stow (Ohio) | 2,048.69 mi (3,297.05 km) |
| San Marino to Streamwood (Illinois) | 1,707.01 mi (2,747.17 km) |
| San Marino to Streator (Illinois) | 1,664.97 mi (2,679.52 km) |
| San Marino to Streetsboro (Ohio) | 2,053.44 mi (3,304.69 km) |
| San Marino to Strongsville (Ohio) | 2,028.41 mi (3,264.41 km) |
| San Marino to Stuart (Florida) | 2,287.52 mi (3,681.40 km) |
| San Marino to Stuarts Draft (Virginia) | 2,182.87 mi (3,513.00 km) |
| San Marino to Sturgis (Michigan) | 1,845.80 mi (2,970.52 km) |
| San Marino to Suamico (Wisconsin) | 1,748.27 mi (2,813.57 km) |
| San Marino to Sudley (Virginia) | 2,261.45 mi (3,639.45 km) |
| San Marino to Suffern (New York) | 2,428.02 mi (3,907.52 km) |
| San Marino to Suffolk (Virginia) | 2,324.14 mi (3,740.34 km) |
