| Key Largo to Ayamonte | 4,293.10 mi (6,909.07 km) |
| Key Largo to Azcoitia | 4,473.47 mi (7,199.36 km) |
| Key Largo to Azpeitia | 4,475.67 mi (7,202.89 km) |
| Key Largo to Azuqueca de Henares | 4,462.58 mi (7,181.82 km) |
| Key Largo to Badajoz | 4,292.99 mi (6,908.91 km) |
| Key Largo to Badalona | 4,727.18 mi (7,607.67 km) |
| Key Largo to Baena | 4,452.26 mi (7,165.22 km) |
| Key Largo to Baeza | 4,491.67 mi (7,228.65 km) |
| Key Largo to Bailen | 4,474.20 mi (7,200.53 km) |
| Key Largo to Balaguer | 4,649.60 mi (7,482.81 km) |
| Key Largo to Banolas | 4,741.37 mi (7,630.50 km) |
| Key Largo to Baranain | 4,510.71 mi (7,259.29 km) |
| Key Largo to Barbadanes | 4,204.59 mi (6,766.63 km) |
| Key Largo to Barbastro | 4,611.63 mi (7,421.70 km) |
| Key Largo to Barcelona | 4,725.27 mi (7,604.59 km) |
