| Sintra to Newport East (Rhode Island) | 3,202.82 mi (5,154.44 km) |
| Sintra to Newport News (Virginia) | 3,573.18 mi (5,750.48 km) |
| Sintra to Newton (Iowa) | 4,231.28 mi (6,809.59 km) |
| Sintra to Newton (Kansas) | 4,554.80 mi (7,330.24 km) |
| Sintra to Newton (Massachusetts) | 3,181.71 mi (5,120.47 km) |
| Sintra to Newton (North Carolina) | 3,852.90 mi (6,200.65 km) |
| Sintra to Niagara Falls (New York) | 3,539.60 mi (5,696.43 km) |
| Sintra to Niceville (Florida) | 4,288.96 mi (6,902.41 km) |
| Sintra to Nicholasville (Kentucky) | 3,950.01 mi (6,356.92 km) |
| Sintra to Niles (Illinois) | 3,980.41 mi (6,405.85 km) |
| Sintra to Niles (Michigan) | 3,913.24 mi (6,297.75 km) |
| Sintra to Niles (Ohio) | 3,670.73 mi (5,907.46 km) |
| Sintra to Nipomo (California) | 5,702.92 mi (9,177.96 km) |
| Sintra to Nixa (Missouri) | 4,399.32 mi (7,080.02 km) |
| Sintra to Noblesville (Indiana) | 3,954.59 mi (6,364.30 km) |
