| Philadelphia to Clemson (South Carolina) | 559.24 mi (900.02 km) |
| Philadelphia to Clermont (Florida) | 876.87 mi (1,411.18 km) |
| Philadelphia to Cleveland (Mississippi) | 962.58 mi (1,549.12 km) |
| Philadelphia to Cleveland (Ohio) | 357.31 mi (575.04 km) |
| Philadelphia to Cleveland (Tennessee) | 628.18 mi (1,010.95 km) |
| Philadelphia to Cleveland Heights (Ohio) | 352.07 mi (566.60 km) |
| Philadelphia to Cliffside Park (New Jersey) | 82.47 mi (132.72 km) |
| Philadelphia to Clifton (Colorado) | 1,766.48 mi (2,842.87 km) |
| Philadelphia to Clifton (New Jersey) | 78.29 mi (125.99 km) |
| Philadelphia to Clinton (Iowa) | 797.72 mi (1,283.81 km) |
| Philadelphia to Clinton (Maryland) | 128.50 mi (206.80 km) |
| Philadelphia to Clinton (Mississippi) | 997.28 mi (1,604.97 km) |
| Philadelphia to Clinton (Utah) | 1,925.20 mi (3,098.31 km) |
| Philadelphia to Clive (Iowa) | 980.38 mi (1,577.77 km) |
| Philadelphia to Cloquet (Minnesota) | 984.64 mi (1,584.63 km) |
