| Boulder City to Ayamonte | 5,583.99 mi (8,986.56 km) |
| Boulder City to Azcoitia | 5,528.64 mi (8,897.49 km) |
| Boulder City to Azpeitia | 5,530.26 mi (8,900.09 km) |
| Boulder City to Azuqueca de Henares | 5,608.32 mi (9,025.71 km) |
| Boulder City to Badajoz | 5,529.87 mi (8,899.47 km) |
| Boulder City to Badalona | 5,781.83 mi (9,304.96 km) |
| Boulder City to Baena | 5,696.81 mi (9,168.12 km) |
| Boulder City to Baeza | 5,715.84 mi (9,198.76 km) |
| Boulder City to Bailen | 5,698.93 mi (9,171.54 km) |
| Boulder City to Balaguer | 5,711.08 mi (9,191.10 km) |
| Boulder City to Banolas | 5,769.03 mi (9,284.35 km) |
| Boulder City to Baranain | 5,570.40 mi (8,964.69 km) |
| Boulder City to Barbadanes | 5,346.05 mi (8,603.63 km) |
| Boulder City to Barbastro | 5,673.84 mi (9,131.17 km) |
| Boulder City to Barcelona | 5,782.13 mi (9,305.43 km) |
