| Romeoville to Chojnice | 4,519.72 mi (7,273.78 km) |
| Romeoville to Chojnow | 4,568.41 mi (7,352.15 km) |
| Romeoville to Chorzow | 4,713.05 mi (7,584.92 km) |
| Romeoville to Choszczno | 4,471.90 mi (7,196.82 km) |
| Romeoville to Chrzanow | 4,735.71 mi (7,621.38 km) |
| Romeoville to Ciechanow | 4,655.04 mi (7,491.56 km) |
| Romeoville to Ciechocinek | 4,594.64 mi (7,394.36 km) |
| Romeoville to Cieszyn | 4,726.49 mi (7,606.55 km) |
| Romeoville to Czarna Bialostocka | 4,718.88 mi (7,594.30 km) |
| Romeoville to Czarnkow | 4,521.16 mi (7,276.11 km) |
| Romeoville to Czechowice-Dziedzice | 4,732.07 mi (7,615.53 km) |
| Romeoville to Czeladz | 4,716.10 mi (7,589.84 km) |
| Romeoville to Czersk Pomorski | 4,529.47 mi (7,289.48 km) |
| Romeoville to Czestochowa | 4,696.64 mi (7,558.51 km) |
| Romeoville to Czluchow | 4,515.18 mi (7,266.48 km) |
