| Sintra to Blue Springs (Missouri) | 4,377.52 mi (7,044.95 km) |
| Sintra to Bluffdale (Utah) | 5,103.55 mi (8,213.37 km) |
| Sintra to Bluffton (Indiana) | 3,894.20 mi (6,267.11 km) |
| Sintra to Bluffton (South Carolina) | 3,947.12 mi (6,352.27 km) |
| Sintra to Blythe (California) | 5,516.17 mi (8,877.42 km) |
| Sintra to Blytheville (Arkansas) | 4,273.92 mi (6,878.20 km) |
| Sintra to Boca Raton (Florida) | 4,104.76 mi (6,605.97 km) |
| Sintra to Boerne (Texas) | 4,932.94 mi (7,938.80 km) |
| Sintra to Bogalusa (Louisiana) | 4,452.34 mi (7,165.35 km) |
| Sintra to Boiling Springs (South Carolina) | 3,909.56 mi (6,291.84 km) |
| Sintra to Boise (Idaho) | 5,141.89 mi (8,275.08 km) |
| Sintra to Bolingbrook (Illinois) | 4,004.01 mi (6,443.84 km) |
| Sintra to Bolivar (Missouri) | 4,385.70 mi (7,058.09 km) |
| Sintra to Bon Air (Virginia) | 3,614.53 mi (5,817.03 km) |
| Sintra to Bonham (Texas) | 4,663.03 mi (7,504.42 km) |
