| Romeoville to Cosham | 3,962.24 mi (6,376.61 km) |
| Romeoville to Costessey | 3,990.21 mi (6,421.62 km) |
| Romeoville to Cottingham | 3,894.90 mi (6,268.23 km) |
| Romeoville to Coulsdon | 3,982.51 mi (6,409.23 km) |
| Romeoville to Coventry | 3,896.18 mi (6,270.29 km) |
| Romeoville to Cowdenbeath | 3,722.09 mi (5,990.12 km) |
| Romeoville to Cowes | 3,955.81 mi (6,366.27 km) |
| Romeoville to Cowley | 3,962.80 mi (6,377.52 km) |
| Romeoville to Cowley | 3,928.33 mi (6,322.04 km) |
| Romeoville to Cramlington | 3,813.77 mi (6,137.68 km) |
| Romeoville to Cranleigh | 3,975.45 mi (6,397.87 km) |
| Romeoville to Crawley | 3,987.49 mi (6,417.25 km) |
| Romeoville to Crayford | 3,990.56 mi (6,422.18 km) |
| Romeoville to Crewe | 3,840.37 mi (6,180.48 km) |
| Romeoville to Crigglestone | 3,858.29 mi (6,209.32 km) |
