| Romeoville to Celano | 4,873.64 mi (7,843.37 km) |
| Romeoville to Cento | 4,671.00 mi (7,517.24 km) |
| Romeoville to Cepagatti | 4,881.61 mi (7,856.20 km) |
| Romeoville to Ceprano | 4,895.40 mi (7,878.39 km) |
| Romeoville to Cercola | 4,958.86 mi (7,980.51 km) |
| Romeoville to Cerea | 4,648.99 mi (7,481.82 km) |
| Romeoville to Cerese | 4,636.98 mi (7,462.50 km) |
| Romeoville to Cerignola | 5,002.78 mi (8,051.20 km) |
| Romeoville to Cermenate | 4,545.17 mi (7,314.75 km) |
| Romeoville to Cernusco sul Naviglio | 4,562.38 mi (7,342.43 km) |
| Romeoville to Cerreto Guidi | 4,695.55 mi (7,556.76 km) |
| Romeoville to Cerro Maggiore | 4,543.96 mi (7,312.79 km) |
| Romeoville to Certaldo | 4,710.99 mi (7,581.60 km) |
| Romeoville to Cerveteri | 4,819.02 mi (7,755.47 km) |
| Romeoville to Cervia | 4,732.90 mi (7,616.87 km) |
