| Mountain Ash to Crest Hill (Illinois) | 3,850.08 mi (6,196.11 km) |
| Mountain Ash to Crestview (Florida) | 4,307.29 mi (6,931.91 km) |
| Mountain Ash to Crestwood (Illinois) | 3,832.32 mi (6,167.53 km) |
| Mountain Ash to Crestwood (Missouri) | 4,079.44 mi (6,565.23 km) |
| Mountain Ash to Creve Coeur (Missouri) | 4,076.94 mi (6,561.20 km) |
| Mountain Ash to Crofton (Maryland) | 3,508.38 mi (5,646.19 km) |
| Mountain Ash to Crossville (Tennessee) | 3,990.57 mi (6,422.20 km) |
| Mountain Ash to Crowley (Louisiana) | 4,570.92 mi (7,356.18 km) |
| Mountain Ash to Crowley (Texas) | 4,648.74 mi (7,481.42 km) |
| Mountain Ash to Crown Point (Indiana) | 3,827.64 mi (6,159.99 km) |
| Mountain Ash to Crystal (Minnesota) | 3,887.83 mi (6,256.85 km) |
| Mountain Ash to Crystal Lake (Illinois) | 3,828.38 mi (6,161.18 km) |
| Mountain Ash to Cudahy (California) | 5,329.84 mi (8,577.55 km) |
| Mountain Ash to Cudahy (Wisconsin) | 3,777.92 mi (6,079.97 km) |
| Mountain Ash to Cullman (Alabama) | 4,149.47 mi (6,677.93 km) |
