| Pontneddfechan to Cookeville (Tennessee) | 3,990.65 mi (6,422.34 km) |
| Pontneddfechan to Coolidge (Arizona) | 5,148.39 mi (8,285.54 km) |
| Pontneddfechan to Coon Rapids (Minnesota) | 3,869.37 mi (6,227.15 km) |
| Pontneddfechan to Cooper City (Florida) | 4,268.78 mi (6,869.94 km) |
| Pontneddfechan to Coos Bay (Oregon) | 4,970.30 mi (7,998.93 km) |
| Pontneddfechan to Copiague (New York) | 3,290.87 mi (5,296.15 km) |
| Pontneddfechan to Coppell (Texas) | 4,604.38 mi (7,410.03 km) |
| Pontneddfechan to Copperas Cove (Texas) | 4,735.36 mi (7,620.82 km) |
| Pontneddfechan to Coral Gables (Florida) | 4,285.45 mi (6,896.77 km) |
| Pontneddfechan to Coral Springs (Florida) | 4,256.35 mi (6,849.94 km) |
| Pontneddfechan to Coral Terrace (Florida) | 4,284.71 mi (6,895.58 km) |
| Pontneddfechan to Coralville (Iowa) | 3,967.21 mi (6,384.61 km) |
| Pontneddfechan to Coram (New York) | 3,265.99 mi (5,256.11 km) |
| Pontneddfechan to Corcoran (California) | 5,244.77 mi (8,440.64 km) |
| Pontneddfechan to Cordele (Georgia) | 4,121.61 mi (6,633.09 km) |
