| Niagara Falls to Ayamonte | 3,688.19 mi (5,935.56 km) |
| Niagara Falls to Azcoitia | 3,720.43 mi (5,987.45 km) |
| Niagara Falls to Azpeitia | 3,722.35 mi (5,990.54 km) |
| Niagara Falls to Azuqueca de Henares | 3,764.83 mi (6,058.91 km) |
| Niagara Falls to Badajoz | 3,650.50 mi (5,874.91 km) |
| Niagara Falls to Badalona | 3,981.81 mi (6,408.10 km) |
| Niagara Falls to Baena | 3,819.09 mi (6,146.22 km) |
| Niagara Falls to Baeza | 3,845.78 mi (6,189.18 km) |
| Niagara Falls to Bailen | 3,828.22 mi (6,160.93 km) |
| Niagara Falls to Balaguer | 3,905.85 mi (6,285.86 km) |
| Niagara Falls to Banolas | 3,980.73 mi (6,406.36 km) |
| Niagara Falls to Baranain | 3,761.54 mi (6,053.62 km) |
| Niagara Falls to Barbadanes | 3,496.45 mi (5,626.99 km) |
| Niagara Falls to Barbastro | 3,867.13 mi (6,223.55 km) |
| Niagara Falls to Barcelona | 3,981.13 mi (6,407.01 km) |
