| Gretna to Caldicot | 4,519.58 mi (7,273.56 km) |
| Gretna to Calne | 4,553.28 mi (7,327.80 km) |
| Gretna to Cam | 4,532.95 mi (7,295.08 km) |
| Gretna to Camberley | 4,607.12 mi (7,414.44 km) |
| Gretna to Camborne | 4,441.59 mi (7,148.05 km) |
| Gretna to Cambridge | 4,621.86 mi (7,438.17 km) |
| Gretna to Cambuslang | 4,381.84 mi (7,051.90 km) |
| Gretna to Canford Cliffs | 4,572.59 mi (7,358.88 km) |
| Gretna to Cannock | 4,525.50 mi (7,283.09 km) |
| Gretna to Canterbury | 4,682.40 mi (7,535.59 km) |
| Gretna to Carlisle | 4,445.27 mi (7,153.97 km) |
| Gretna to Carlton Colville | 4,678.32 mi (7,529.03 km) |
| Gretna to Carluke | 4,395.87 mi (7,074.46 km) |
| Gretna to Carnoustie | 4,423.59 mi (7,119.08 km) |
| Gretna to Carshalton | 4,629.79 mi (7,450.93 km) |
