| Mountain Ash to Castle Rock (Colorado) | 4,578.93 mi (7,369.08 km) |
| Mountain Ash to Castro Valley (California) | 5,240.79 mi (8,434.23 km) |
| Mountain Ash to Catalina Foothills (Arizona) | 5,170.34 mi (8,320.85 km) |
| Mountain Ash to Cataño (Puerto Rico) | 4,065.92 mi (6,543.47 km) |
| Mountain Ash to Cathedral City (California) | 5,279.59 mi (8,496.68 km) |
| Mountain Ash to Catonsville (Maryland) | 3,499.86 mi (5,632.49 km) |
| Mountain Ash to Cave Spring (Virginia) | 3,726.01 mi (5,996.44 km) |
| Mountain Ash to Cayce (South Carolina) | 3,922.40 mi (6,312.49 km) |
| Mountain Ash to Cayey (Puerto Rico) | 4,083.79 mi (6,572.22 km) |
| Mountain Ash to Cedar City (Utah) | 4,953.68 mi (7,972.18 km) |
| Mountain Ash to Cedar Falls (Iowa) | 3,971.31 mi (6,391.21 km) |
| Mountain Ash to Cedar Hill (Texas) | 4,632.98 mi (7,456.06 km) |
| Mountain Ash to Cedar Lake (Indiana) | 3,833.30 mi (6,169.10 km) |
| Mountain Ash to Cedar Mill (Oregon) | 4,817.25 mi (7,752.62 km) |
| Mountain Ash to Cedar Park (Texas) | 4,773.37 mi (7,682.00 km) |
