| Rock Island to Cosham | 4,065.17 mi (6,542.26 km) |
| Rock Island to Costessey | 4,089.42 mi (6,581.29 km) |
| Rock Island to Cottingham | 3,993.19 mi (6,426.42 km) |
| Rock Island to Coulsdon | 4,084.32 mi (6,573.08 km) |
| Rock Island to Coventry | 3,997.06 mi (6,432.65 km) |
| Rock Island to Cowdenbeath | 3,817.91 mi (6,144.33 km) |
| Rock Island to Cowes | 4,058.98 mi (6,532.29 km) |
| Rock Island to Cowley | 4,064.49 mi (6,541.16 km) |
| Rock Island to Cowley | 4,030.07 mi (6,485.77 km) |
| Rock Island to Cramlington | 3,910.54 mi (6,293.41 km) |
| Rock Island to Cranleigh | 4,077.69 mi (6,562.41 km) |
| Rock Island to Crawley | 4,089.63 mi (6,581.63 km) |
| Rock Island to Crayford | 4,092.03 mi (6,585.49 km) |
| Rock Island to Crewe | 3,940.64 mi (6,341.85 km) |
| Rock Island to Crigglestone | 3,957.31 mi (6,368.67 km) |
