| Sintra to Salisbury (New York) | 3,331.98 mi (5,362.30 km) |
| Sintra to Salisbury (North Carolina) | 3,815.42 mi (6,140.32 km) |
| Sintra to Salmon Creek (Washington) | 5,285.49 mi (8,506.17 km) |
| Sintra to Salt Lake City (Utah) | 5,090.48 mi (8,192.33 km) |
| Sintra to Sammamish (Washington) | 5,175.82 mi (8,329.68 km) |
| Sintra to San Angelo (Texas) | 4,951.74 mi (7,969.06 km) |
| Sintra to San Anselmo (California) | 5,647.13 mi (9,088.18 km) |
| Sintra to San Antonio (Texas) | 4,935.44 mi (7,942.83 km) |
| Sintra to San Benito (Texas) | 5,023.59 mi (8,084.68 km) |
| Sintra to San Bernardino (California) | 5,608.91 mi (9,026.67 km) |
| Sintra to San Bruno (California) | 5,658.64 mi (9,106.70 km) |
| Sintra to San Buenaventura (California) | 5,685.29 mi (9,149.59 km) |
| Sintra to San Carlos (California) | 5,658.21 mi (9,106.01 km) |
| Sintra to San Carlos Park (Florida) | 4,191.48 mi (6,745.53 km) |
| Sintra to San Clemente (California) | 5,654.16 mi (9,099.49 km) |
