| Romeoville to Ayamonte | 4,155.31 mi (6,687.32 km) |
| Romeoville to Azcoitia | 4,170.16 mi (6,711.22 km) |
| Romeoville to Azpeitia | 4,172.02 mi (6,714.21 km) |
| Romeoville to Azuqueca de Henares | 4,222.09 mi (6,794.79 km) |
| Romeoville to Badajoz | 4,114.55 mi (6,621.73 km) |
| Romeoville to Badalona | 4,430.78 mi (7,130.66 km) |
| Romeoville to Baena | 4,283.15 mi (6,893.06 km) |
| Romeoville to Baeza | 4,308.46 mi (6,933.79 km) |
| Romeoville to Bailen | 4,290.99 mi (6,905.68 km) |
| Romeoville to Balaguer | 4,355.64 mi (7,009.73 km) |
| Romeoville to Banolas | 4,427.22 mi (7,124.93 km) |
| Romeoville to Baranain | 4,211.56 mi (6,777.86 km) |
| Romeoville to Barbadanes | 3,954.19 mi (6,363.66 km) |
| Romeoville to Barbastro | 4,317.09 mi (6,947.69 km) |
| Romeoville to Barcelona | 4,430.31 mi (7,129.89 km) |
