| Opovo to Azcoitia | 1,131.67 mi (1,821.25 km) |
| Opovo to Azpeitia | 1,129.41 mi (1,817.62 km) |
| Opovo to Azuqueca de Henares | 1,235.69 mi (1,988.65 km) |
| Opovo to Badajoz | 1,463.03 mi (2,354.52 km) |
| Opovo to Badalona | 947.11 mi (1,524.23 km) |
| Opovo to Baena | 1,375.97 mi (2,214.41 km) |
| Opovo to Baeza | 1,323.11 mi (2,129.34 km) |
| Opovo to Bailen | 1,334.02 mi (2,146.90 km) |
| Opovo to Balaguer | 1,007.59 mi (1,621.56 km) |
| Opovo to Banolas | 904.97 mi (1,456.42 km) |
| Opovo to Baranain | 1,107.04 mi (1,781.61 km) |
| Opovo to Barbadanes | 1,421.35 mi (2,287.43 km) |
| Opovo to Barbastro | 1,035.07 mi (1,665.79 km) |
| Opovo to Barcelona | 951.11 mi (1,530.67 km) |
| Opovo to Bargas | 1,289.09 mi (2,074.59 km) |
