| Mercer Island to Clacton-on-Sea | 4,801.43 mi (7,727.15 km) |
| Mercer Island to Clay Cross | 4,660.50 mi (7,500.35 km) |
| Mercer Island to Clayton | 4,616.95 mi (7,430.26 km) |
| Mercer Island to Clayton le Moors | 4,602.52 mi (7,407.04 km) |
| Mercer Island to Cleckheaton | 4,622.44 mi (7,439.09 km) |
| Mercer Island to Cleethorpes | 4,675.13 mi (7,523.90 km) |
| Mercer Island to Clevedon | 4,714.69 mi (7,587.56 km) |
| Mercer Island to Clifton | 4,680.63 mi (7,532.74 km) |
| Mercer Island to Clifton | 4,625.12 mi (7,443.41 km) |
| Mercer Island to Cliftonville | 4,830.41 mi (7,773.80 km) |
| Mercer Island to Clitheroe | 4,597.21 mi (7,398.49 km) |
| Mercer Island to Clydebank | 4,438.82 mi (7,143.60 km) |
| Mercer Island to Coalville | 4,685.32 mi (7,540.30 km) |
| Mercer Island to Coatbridge | 4,450.33 mi (7,162.12 km) |
| Mercer Island to Cobham | 4,786.27 mi (7,702.76 km) |
