| Penwortham to Castle Rock (Colorado) | 4,522.30 mi (7,277.93 km) |
| Penwortham to Castro Valley (California) | 5,161.14 mi (8,306.05 km) |
| Penwortham to Catalina Foothills (Arizona) | 5,115.17 mi (8,232.07 km) |
| Penwortham to Cataño (Puerto Rico) | 4,117.91 mi (6,627.14 km) |
| Penwortham to Cathedral City (California) | 5,213.30 mi (8,390.00 km) |
| Penwortham to Catonsville (Maryland) | 3,487.65 mi (5,612.83 km) |
| Penwortham to Cave Spring (Virginia) | 3,713.14 mi (5,975.72 km) |
| Penwortham to Cayce (South Carolina) | 3,914.98 mi (6,300.55 km) |
| Penwortham to Cayey (Puerto Rico) | 4,136.29 mi (6,656.71 km) |
| Penwortham to Cedar City (Utah) | 4,887.29 mi (7,865.33 km) |
| Penwortham to Cedar Falls (Iowa) | 3,927.23 mi (6,320.27 km) |
| Penwortham to Cedar Hill (Texas) | 4,600.66 mi (7,404.05 km) |
| Penwortham to Cedar Lake (Indiana) | 3,799.17 mi (6,114.17 km) |
| Penwortham to Cedar Mill (Oregon) | 4,727.27 mi (7,607.80 km) |
| Penwortham to Cedar Park (Texas) | 4,743.18 mi (7,633.41 km) |
