| Mentor to Clacton-on-Sea | 3,754.21 mi (6,041.81 km) |
| Mentor to Clay Cross | 3,618.02 mi (5,822.64 km) |
| Mentor to Clayton | 3,587.06 mi (5,772.81 km) |
| Mentor to Clayton le Moors | 3,565.47 mi (5,738.07 km) |
| Mentor to Cleckheaton | 3,592.08 mi (5,780.89 km) |
| Mentor to Cleethorpes | 3,661.04 mi (5,891.88 km) |
| Mentor to Clevedon | 3,606.18 mi (5,803.58 km) |
| Mentor to Clifton | 3,633.82 mi (5,848.06 km) |
| Mentor to Clifton | 3,609.45 mi (5,808.86 km) |
| Mentor to Cliftonville | 3,775.90 mi (6,076.72 km) |
| Mentor to Clitheroe | 3,562.83 mi (5,733.83 km) |
| Mentor to Clydebank | 3,441.29 mi (5,538.23 km) |
| Mentor to Coalville | 3,631.08 mi (5,843.66 km) |
| Mentor to Coatbridge | 3,455.88 mi (5,561.69 km) |
| Mentor to Cobham | 3,706.21 mi (5,964.57 km) |
