| Sintra to Romeoville (Illinois) | 4,005.64 mi (6,446.46 km) |
| Sintra to Romulus (Michigan) | 3,767.15 mi (6,062.64 km) |
| Sintra to Ronkonkoma (New York) | 3,309.15 mi (5,325.57 km) |
| Sintra to Roosevelt (New York) | 3,334.67 mi (5,366.63 km) |
| Sintra to Rosamond (California) | 5,614.98 mi (9,036.44 km) |
| Sintra to Rosaryville (Maryland) | 3,543.23 mi (5,702.29 km) |
| Sintra to Roscoe (Illinois) | 4,023.96 mi (6,475.94 km) |
| Sintra to Rose Hill (Virginia) | 3,556.70 mi (5,723.96 km) |
| Sintra to Roseburg (Oregon) | 5,427.50 mi (8,734.72 km) |
| Sintra to Rosedale (California) | 5,632.46 mi (9,064.57 km) |
| Sintra to Rosedale (Maryland) | 3,512.70 mi (5,653.14 km) |
| Sintra to Roselle (Illinois) | 3,994.61 mi (6,428.70 km) |
| Sintra to Roselle (New Jersey) | 3,368.60 mi (5,421.23 km) |
| Sintra to Roselle Park (New Jersey) | 3,368.63 mi (5,421.28 km) |
| Sintra to Rosemead (California) | 5,645.98 mi (9,086.32 km) |
