| Willoughby to Clacton-on-Sea | 3,758.99 mi (6,049.50 km) |
| Willoughby to Clay Cross | 3,622.79 mi (5,830.33 km) |
| Willoughby to Clayton | 3,591.83 mi (5,780.49 km) |
| Willoughby to Clayton le Moors | 3,570.25 mi (5,745.76 km) |
| Willoughby to Cleckheaton | 3,596.85 mi (5,788.57 km) |
| Willoughby to Cleethorpes | 3,665.81 mi (5,899.56 km) |
| Willoughby to Clevedon | 3,610.96 mi (5,811.28 km) |
| Willoughby to Clifton | 3,638.60 mi (5,855.75 km) |
| Willoughby to Clifton | 3,614.23 mi (5,816.53 km) |
| Willoughby to Cliftonville | 3,780.68 mi (6,084.41 km) |
| Willoughby to Clitheroe | 3,567.61 mi (5,741.51 km) |
| Willoughby to Clydebank | 3,446.05 mi (5,545.89 km) |
| Willoughby to Coalville | 3,635.86 mi (5,851.35 km) |
| Willoughby to Coatbridge | 3,460.64 mi (5,569.35 km) |
| Willoughby to Cobham | 3,710.99 mi (5,972.27 km) |
