| Romeoville to Caldicot | 3,873.89 mi (6,234.42 km) |
| Romeoville to Calne | 3,907.25 mi (6,288.12 km) |
| Romeoville to Cam | 3,885.34 mi (6,252.85 km) |
| Romeoville to Camberley | 3,958.99 mi (6,371.37 km) |
| Romeoville to Camborne | 3,815.23 mi (6,140.01 km) |
| Romeoville to Cambridge | 3,963.91 mi (6,379.29 km) |
| Romeoville to Cambuslang | 3,700.68 mi (5,955.67 km) |
| Romeoville to Canford Cliffs | 3,933.22 mi (6,329.91 km) |
| Romeoville to Cannock | 3,868.09 mi (6,225.09 km) |
| Romeoville to Canterbury | 4,030.24 mi (6,486.04 km) |
| Romeoville to Carlisle | 3,770.11 mi (6,067.40 km) |
| Romeoville to Carlton Colville | 4,014.52 mi (6,460.74 km) |
| Romeoville to Carluke | 3,714.89 mi (5,978.54 km) |
| Romeoville to Carnoustie | 3,734.15 mi (6,009.54 km) |
| Romeoville to Carshalton | 3,979.98 mi (6,405.16 km) |
