| Rock Island to Clacton-on-Sea | 4,116.38 mi (6,624.68 km) |
| Rock Island to Clay Cross | 3,976.51 mi (6,399.58 km) |
| Rock Island to Clayton | 3,942.38 mi (6,344.65 km) |
| Rock Island to Clayton le Moors | 3,921.78 mi (6,311.49 km) |
| Rock Island to Cleckheaton | 3,947.61 mi (6,353.06 km) |
| Rock Island to Cleethorpes | 4,014.77 mi (6,461.15 km) |
| Rock Island to Clevedon | 3,977.42 mi (6,401.04 km) |
| Rock Island to Clifton | 3,993.50 mi (6,426.91 km) |
| Rock Island to Clifton | 3,962.41 mi (6,376.88 km) |
| Rock Island to Cliftonville | 4,139.92 mi (6,662.55 km) |
| Rock Island to Clitheroe | 3,918.55 mi (6,306.29 km) |
| Rock Island to Clydebank | 3,786.79 mi (6,094.25 km) |
| Rock Island to Coalville | 3,992.17 mi (6,424.78 km) |
| Rock Island to Coatbridge | 3,801.08 mi (6,117.25 km) |
| Rock Island to Cobham | 4,073.85 mi (6,556.24 km) |
