| Sintra to Bountiful (Utah) | 5,083.75 mi (8,181.50 km) |
| Sintra to Bourbonnais (Illinois) | 4,008.77 mi (6,451.50 km) |
| Sintra to Bowie (Maryland) | 3,533.97 mi (5,687.38 km) |
| Sintra to Bowling Green (Kentucky) | 4,070.28 mi (6,550.48 km) |
| Sintra to Bowling Green (Ohio) | 3,803.80 mi (6,121.62 km) |
| Sintra to Box Elder (South Dakota) | 4,588.86 mi (7,385.06 km) |
| Sintra to Boynton Beach (Florida) | 4,097.86 mi (6,594.86 km) |
| Sintra to Bozeman (Montana) | 4,852.57 mi (7,809.45 km) |
| Sintra to Bradenton (Florida) | 4,194.79 mi (6,750.86 km) |
| Sintra to Bradfordville (Florida) | 4,170.94 mi (6,712.47 km) |
| Sintra to Bradley (Illinois) | 4,007.79 mi (6,449.91 km) |
| Sintra to Bradley Gardens (New Jersey) | 3,390.62 mi (5,456.67 km) |
| Sintra to Brainerd (Minnesota) | 4,136.08 mi (6,656.38 km) |
| Sintra to Brambleton (Virginia) | 3,572.54 mi (5,749.44 km) |
| Sintra to Brandermill (Virginia) | 3,620.96 mi (5,827.38 km) |
