| Sintra to Sugar Hill (Georgia) | 4,044.31 mi (6,508.69 km) |
| Sintra to Sugar Land (Texas) | 4,786.83 mi (7,703.66 km) |
| Sintra to Sugarland Run (Virginia) | 3,563.45 mi (5,734.83 km) |
| Sintra to Sugarmill Woods (Florida) | 4,146.91 mi (6,673.80 km) |
| Sintra to Suisun City (California) | 5,612.40 mi (9,032.28 km) |
| Sintra to Suitland (Maryland) | 3,545.81 mi (5,706.43 km) |
| Sintra to Sulphur (Louisiana) | 4,648.65 mi (7,481.28 km) |
| Sintra to Sulphur Springs (Texas) | 4,651.53 mi (7,485.91 km) |
| Sintra to Summerfield (Maryland) | 3,541.63 mi (5,699.71 km) |
| Sintra to Summerfield (North Carolina) | 3,769.65 mi (6,066.67 km) |
| Sintra to Summerlin South (Nevada) | 5,435.51 mi (8,747.61 km) |
| Sintra to Summerville (South Carolina) | 3,882.93 mi (6,248.96 km) |
| Sintra to Summit (Illinois) | 3,987.73 mi (6,417.63 km) |
| Sintra to Summit (New Jersey) | 3,372.25 mi (5,427.12 km) |
| Sintra to Sumner (Washington) | 5,200.19 mi (8,368.89 km) |
