| Romeoville to Cervignano del Friuli | 4,704.36 mi (7,570.93 km) |
| Romeoville to Cesa | 4,949.75 mi (7,965.86 km) |
| Romeoville to Cesano Maderno | 4,550.41 mi (7,323.17 km) |
| Romeoville to Cesena | 4,733.61 mi (7,618.01 km) |
| Romeoville to Cesenatico | 4,736.89 mi (7,623.29 km) |
| Romeoville to Cetraro | 5,084.35 mi (8,182.48 km) |
| Romeoville to Cherasco | 4,539.01 mi (7,304.83 km) |
| Romeoville to Chiampo | 4,637.06 mi (7,462.63 km) |
| Romeoville to Chiaravalle | 4,799.26 mi (7,723.67 km) |
| Romeoville to Chiari | 4,583.81 mi (7,376.93 km) |
| Romeoville to Chiavari | 4,611.12 mi (7,420.89 km) |
| Romeoville to Chieri | 4,522.72 mi (7,278.62 km) |
| Romeoville to Chieti | 4,886.30 mi (7,863.73 km) |
| Romeoville to Chioggia | 4,689.36 mi (7,546.79 km) |
| Romeoville to Chiusi | 4,769.60 mi (7,675.93 km) |
