| Romeoville to Castelfidardo | 4,813.45 mi (7,746.49 km) |
| Romeoville to Castelfiorentino | 4,705.84 mi (7,573.32 km) |
| Romeoville to Castelfranco di Sopra | 4,728.34 mi (7,609.53 km) |
| Romeoville to Castelfranco di Sotto | 4,693.03 mi (7,552.71 km) |
| Romeoville to Castelfranco Emilia | 4,667.64 mi (7,511.85 km) |
| Romeoville to Castelfranco Veneto | 4,657.31 mi (7,495.22 km) |
| Romeoville to Castellabate | 5,009.20 mi (8,061.52 km) |
| Romeoville to Castellammare del Golfo | 5,024.20 mi (8,085.66 km) |
| Romeoville to Castellammare di Stabia | 4,971.70 mi (8,001.18 km) |
| Romeoville to Castellamonte | 4,503.71 mi (7,248.02 km) |
| Romeoville to Castellana Grotte | 5,070.03 mi (8,159.42 km) |
| Romeoville to Castellaneta | 5,072.20 mi (8,162.92 km) |
| Romeoville to Castellanza | 4,541.32 mi (7,308.55 km) |
| Romeoville to Castellarano | 4,658.29 mi (7,496.80 km) |
| Romeoville to Castelleone | 4,588.13 mi (7,383.88 km) |
