| Romeoville to Caltagirone | 5,127.56 mi (8,252.02 km) |
| Romeoville to Caltanissetta | 5,097.43 mi (8,203.53 km) |
| Romeoville to Calvisano | 4,608.87 mi (7,417.27 km) |
| Romeoville to Calvizzano | 4,950.69 mi (7,967.36 km) |
| Romeoville to Camaiore | 4,665.42 mi (7,508.26 km) |
| Romeoville to Cameri | 4,536.15 mi (7,300.23 km) |
| Romeoville to Camisano Vicentino | 4,655.21 mi (7,491.84 km) |
| Romeoville to Campagna | 4,997.80 mi (8,043.19 km) |
| Romeoville to Campagnano di Roma | 4,824.69 mi (7,764.58 km) |
| Romeoville to Campi Bisenzio | 4,703.38 mi (7,569.36 km) |
| Romeoville to Campi Salentina | 5,125.53 mi (8,248.75 km) |
| Romeoville to Campiglia Marittima | 4,714.18 mi (7,586.73 km) |
| Romeoville to Campobasso | 4,940.56 mi (7,951.06 km) |
| Romeoville to Campobello di Licata | 5,102.11 mi (8,211.06 km) |
| Romeoville to Campobello di Mazara | 5,036.11 mi (8,104.83 km) |
