| San Marino to Somersworth (New Hampshire) | 2,587.85 mi (4,164.75 km) |
| San Marino to Somerton (Arizona) | 223.28 mi (359.34 km) |
| San Marino to Somerville (Massachusetts) | 2,579.73 mi (4,151.68 km) |
| San Marino to Somerville (New Jersey) | 2,405.83 mi (3,871.81 km) |
| San Marino to Sonoma (California) | 376.26 mi (605.53 km) |
| San Marino to Soquel (California) | 293.10 mi (471.70 km) |
| San Marino to South Bend (Indiana) | 1,801.26 mi (2,898.85 km) |
| San Marino to South Bradenton (Florida) | 2,147.21 mi (3,455.60 km) |
| San Marino to South Burlington (Vermont) | 2,470.68 mi (3,976.17 km) |
| San Marino to South Charleston (West Virginia) | 2,036.10 mi (3,276.78 km) |
| San Marino to South Daytona (Florida) | 2,197.27 mi (3,536.17 km) |
| San Marino to South El Monte (California) | 6.27 mi (10.08 km) |
| San Marino to South Elgin (Illinois) | 1,699.81 mi (2,735.58 km) |
| San Marino to South Euclid (Ohio) | 2,044.89 mi (3,290.93 km) |
| San Marino to South Farmingdale (New York) | 2,465.93 mi (3,968.54 km) |
