| San Marino to Sugar Hill (Georgia) | 1,938.96 mi (3,120.45 km) |
| San Marino to Sugar Land (Texas) | 1,352.65 mi (2,176.88 km) |
| San Marino to Sugarland Run (Virginia) | 2,266.57 mi (3,647.69 km) |
| San Marino to Sugarmill Woods (Florida) | 2,121.50 mi (3,414.23 km) |
| San Marino to Suisun City (California) | 358.29 mi (576.61 km) |
| San Marino to Suitland (Maryland) | 2,291.87 mi (3,688.41 km) |
| San Marino to Sulphur (Louisiana) | 1,468.82 mi (2,363.83 km) |
| San Marino to Sulphur Springs (Texas) | 1,293.59 mi (2,081.83 km) |
| San Marino to Summerfield (Maryland) | 2,294.49 mi (3,692.62 km) |
| San Marino to Summerfield (North Carolina) | 2,149.42 mi (3,459.15 km) |
| San Marino to Summerlin South (Nevada) | 209.33 mi (336.88 km) |
| San Marino to Summerville (South Carolina) | 2,172.74 mi (3,496.69 km) |
| San Marino to Summit (Illinois) | 1,723.17 mi (2,773.17 km) |
| San Marino to Summit (New Jersey) | 2,418.00 mi (3,891.40 km) |
| San Marino to Sumner (Washington) | 929.93 mi (1,496.58 km) |
