| Idanha-a-Nova to Bonita (California) | 5,711.66 mi (9,192.03 km) |
| Idanha-a-Nova to Bonita Springs (Florida) | 4,290.74 mi (6,905.28 km) |
| Idanha-a-Nova to Bonney Lake (Washington) | 5,214.59 mi (8,392.07 km) |
| Idanha-a-Nova to Boone (Iowa) | 4,312.09 mi (6,939.64 km) |
| Idanha-a-Nova to Boone (North Carolina) | 3,935.94 mi (6,334.28 km) |
| Idanha-a-Nova to Borger (Texas) | 4,892.14 mi (7,873.15 km) |
| Idanha-a-Nova to Bossier City (Louisiana) | 4,652.96 mi (7,488.21 km) |
| Idanha-a-Nova to Boston (Massachusetts) | 3,247.75 mi (5,226.74 km) |
| Idanha-a-Nova to Bostonia (California) | 5,700.92 mi (9,174.75 km) |
| Idanha-a-Nova to Bothell (Washington) | 5,187.20 mi (8,348.00 km) |
| Idanha-a-Nova to Bothell East (Washington) | 5,184.96 mi (8,344.38 km) |
| Idanha-a-Nova to Bothell West (Washington) | 5,186.85 mi (8,347.44 km) |
| Idanha-a-Nova to Boulder (Colorado) | 4,883.96 mi (7,859.97 km) |
| Idanha-a-Nova to Boulder City (Nevada) | 5,474.66 mi (8,810.62 km) |
| Idanha-a-Nova to Bound Brook (New Jersey) | 3,458.21 mi (5,565.45 km) |
