| Mountain Ash to Caldicot | 27.73 mi (44.63 km) |
| Mountain Ash to Calne | 61.38 mi (98.78 km) |
| Mountain Ash to Cam | 43.49 mi (70.00 km) |
| Mountain Ash to Camberley | 115.90 mi (186.52 km) |
| Mountain Ash to Camborne | 131.46 mi (211.57 km) |
| Mountain Ash to Cambridge | 153.32 mi (246.75 km) |
| Mountain Ash to Cambuslang | 287.68 mi (462.98 km) |
| Mountain Ash to Canford Cliffs | 92.39 mi (148.68 km) |
| Mountain Ash to Cannock | 90.26 mi (145.26 km) |
| Mountain Ash to Canterbury | 193.84 mi (311.96 km) |
| Mountain Ash to Carlisle | 222.49 mi (358.06 km) |
| Mountain Ash to Carlton Colville | 221.82 mi (356.98 km) |
| Mountain Ash to Carluke | 280.62 mi (451.62 km) |
| Mountain Ash to Carnoustie | 334.10 mi (537.68 km) |
| Mountain Ash to Carshalton | 139.77 mi (224.94 km) |
