| Philadelphia to Castle Pines (Colorado) | 1,573.09 mi (2,531.64 km) |
| Philadelphia to Castle Rock (Colorado) | 1,573.34 mi (2,532.04 km) |
| Philadelphia to Castro Valley (California) | 2,500.60 mi (4,024.33 km) |
| Philadelphia to Catalina Foothills (Arizona) | 2,049.21 mi (3,297.89 km) |
| Philadelphia to Cataño (Puerto Rico) | 1,583.70 mi (2,548.72 km) |
| Philadelphia to Cathedral City (California) | 2,301.37 mi (3,703.70 km) |
| Philadelphia to Catonsville (Maryland) | 99.80 mi (160.62 km) |
| Philadelphia to Cave Spring (Virginia) | 325.75 mi (524.25 km) |
| Philadelphia to Cayce (South Carolina) | 530.56 mi (853.86 km) |
| Philadelphia to Cayey (Puerto Rico) | 1,604.54 mi (2,582.25 km) |
| Philadelphia to Cedar City (Utah) | 2,033.69 mi (3,272.90 km) |
| Philadelphia to Cedar Falls (Iowa) | 914.41 mi (1,471.59 km) |
| Philadelphia to Cedar Hill (Texas) | 1,314.83 mi (2,116.02 km) |
| Philadelphia to Cedar Lake (Indiana) | 650.93 mi (1,047.57 km) |
| Philadelphia to Cedar Mill (Oregon) | 2,411.42 mi (3,880.81 km) |
