| Sintra to Black Forest (Colorado) | 4,848.89 mi (7,803.54 km) |
| Sintra to Blackfoot (Idaho) | 5,006.02 mi (8,056.41 km) |
| Sintra to Blackhawk (California) | 5,628.79 mi (9,058.67 km) |
| Sintra to Blacksburg (Virginia) | 3,765.52 mi (6,060.02 km) |
| Sintra to Blackwells Mills (New Jersey) | 3,389.43 mi (5,454.76 km) |
| Sintra to Blaine (Minnesota) | 4,129.43 mi (6,645.68 km) |
| Sintra to Bloomingdale (Florida) | 4,164.52 mi (6,702.15 km) |
| Sintra to Bloomingdale (Illinois) | 3,995.69 mi (6,430.45 km) |
| Sintra to Bloomington (California) | 5,617.23 mi (9,040.06 km) |
| Sintra to Bloomington (Illinois) | 4,081.58 mi (6,568.67 km) |
| Sintra to Bloomington (Indiana) | 4,005.94 mi (6,446.94 km) |
| Sintra to Bloomington (Minnesota) | 4,144.54 mi (6,669.99 km) |
| Sintra to Bloomsburg (Pennsylvania) | 3,467.64 mi (5,580.62 km) |
| Sintra to Blue Ash (Ohio) | 3,900.17 mi (6,276.71 km) |
| Sintra to Blue Island (Illinois) | 3,985.37 mi (6,413.83 km) |
