| Mountain Ash to Cosham | 115.59 mi (186.03 km) |
| Mountain Ash to Costessey | 206.09 mi (331.68 km) |
| Mountain Ash to Cottingham | 190.92 mi (307.26 km) |
| Mountain Ash to Coulsdon | 141.57 mi (227.84 km) |
| Mountain Ash to Coventry | 93.95 mi (151.19 km) |
| Mountain Ash to Cowdenbeath | 305.99 mi (492.44 km) |
| Mountain Ash to Cowes | 110.23 mi (177.39 km) |
| Mountain Ash to Cowley | 124.81 mi (200.87 km) |
| Mountain Ash to Cowley | 92.73 mi (149.23 km) |
| Mountain Ash to Cramlington | 246.30 mi (396.38 km) |
| Mountain Ash to Cranleigh | 130.56 mi (210.11 km) |
| Mountain Ash to Crawley | 143.16 mi (230.40 km) |
| Mountain Ash to Crayford | 153.74 mi (247.43 km) |
| Mountain Ash to Crewe | 105.65 mi (170.02 km) |
| Mountain Ash to Crigglestone | 156.32 mi (251.58 km) |
