| Greenock to Caldicot | 312.19 mi (502.42 km) |
| Greenock to Calne | 331.50 mi (533.50 km) |
| Greenock to Cam | 309.42 mi (497.96 km) |
| Greenock to Camberley | 358.78 mi (577.41 km) |
| Greenock to Camborne | 397.01 mi (638.92 km) |
| Greenock to Cambridge | 325.63 mi (524.05 km) |
| Greenock to Cambuslang | 24.87 mi (40.03 km) |
| Greenock to Canford Cliffs | 381.06 mi (613.25 km) |
| Greenock to Cannock | 250.71 mi (403.48 km) |
| Greenock to Canterbury | 401.58 mi (646.28 km) |
| Greenock to Carlisle | 102.23 mi (164.53 km) |
| Greenock to Carlton Colville | 355.29 mi (571.79 km) |
| Greenock to Carluke | 39.08 mi (62.89 km) |
| Greenock to Carnoustie | 87.63 mi (141.03 km) |
| Greenock to Carshalton | 368.30 mi (592.73 km) |
