| Mountain Ash to Corinth (Mississippi) | 4,179.68 mi (6,726.55 km) |
| Mountain Ash to Corinth (Texas) | 4,608.49 mi (7,416.65 km) |
| Mountain Ash to Cornelius (North Carolina) | 3,843.49 mi (6,185.50 km) |
| Mountain Ash to Cornelius (Oregon) | 4,825.17 mi (7,765.35 km) |
| Mountain Ash to Corning (New York) | 3,387.56 mi (5,451.75 km) |
| Mountain Ash to Corona (California) | 5,315.04 mi (8,553.73 km) |
| Mountain Ash to Coronado (California) | 5,368.78 mi (8,640.22 km) |
| Mountain Ash to Corpus Christi (Texas) | 4,900.68 mi (7,886.88 km) |
| Mountain Ash to Corsicana (Texas) | 4,639.17 mi (7,466.02 km) |
| Mountain Ash to Cortland (New York) | 3,332.95 mi (5,363.87 km) |
| Mountain Ash to Corvallis (Oregon) | 4,885.30 mi (7,862.12 km) |
| Mountain Ash to Coshocton (Ohio) | 3,662.82 mi (5,894.74 km) |
| Mountain Ash to Costa Mesa (California) | 5,337.62 mi (8,590.06 km) |
| Mountain Ash to Coto de Caza (California) | 5,330.69 mi (8,578.92 km) |
| Mountain Ash to Cottage Grove (Minnesota) | 3,882.25 mi (6,247.87 km) |
