| Pontneddfechan to Castle Rock (Colorado) | 4,568.67 mi (7,352.56 km) |
| Pontneddfechan to Castro Valley (California) | 5,230.82 mi (8,418.20 km) |
| Pontneddfechan to Catalina Foothills (Arizona) | 5,160.06 mi (8,304.32 km) |
| Pontneddfechan to Cataño (Puerto Rico) | 4,058.00 mi (6,530.72 km) |
| Pontneddfechan to Cathedral City (California) | 5,269.41 mi (8,480.30 km) |
| Pontneddfechan to Catonsville (Maryland) | 3,489.86 mi (5,616.38 km) |
| Pontneddfechan to Cave Spring (Virginia) | 3,716.00 mi (5,980.32 km) |
| Pontneddfechan to Cayce (South Carolina) | 3,912.49 mi (6,296.54 km) |
| Pontneddfechan to Cayey (Puerto Rico) | 4,075.89 mi (6,559.51 km) |
| Pontneddfechan to Cedar City (Utah) | 4,943.51 mi (7,955.80 km) |
| Pontneddfechan to Cedar Falls (Iowa) | 3,961.02 mi (6,374.65 km) |
| Pontneddfechan to Cedar Hill (Texas) | 4,622.74 mi (7,439.58 km) |
| Pontneddfechan to Cedar Lake (Indiana) | 3,823.05 mi (6,152.60 km) |
| Pontneddfechan to Cedar Mill (Oregon) | 4,807.56 mi (7,737.02 km) |
| Pontneddfechan to Cedar Park (Texas) | 4,763.16 mi (7,665.56 km) |
