| Pittsburgh to Clemson (South Carolina) | 426.89 mi (687.02 km) |
| Pittsburgh to Clermont (Florida) | 828.63 mi (1,333.56 km) |
| Pittsburgh to Cleveland (Mississippi) | 750.82 mi (1,208.33 km) |
| Pittsburgh to Cleveland (Ohio) | 114.18 mi (183.75 km) |
| Pittsburgh to Cleveland (Tennessee) | 450.78 mi (725.46 km) |
| Pittsburgh to Cleveland Heights (Ohio) | 111.07 mi (178.75 km) |
| Pittsburgh to Cliffside Park (New Jersey) | 315.06 mi (507.04 km) |
| Pittsburgh to Clifton (Colorado) | 1,509.33 mi (2,429.03 km) |
| Pittsburgh to Clifton (New Jersey) | 306.36 mi (493.05 km) |
| Pittsburgh to Clinton (Iowa) | 542.50 mi (873.07 km) |
| Pittsburgh to Clinton (Maryland) | 200.85 mi (323.23 km) |
| Pittsburgh to Clinton (Mississippi) | 801.60 mi (1,290.06 km) |
| Pittsburgh to Clinton (Utah) | 1,669.79 mi (2,687.26 km) |
| Pittsburgh to Clive (Iowa) | 724.21 mi (1,165.50 km) |
| Pittsburgh to Cloquet (Minnesota) | 760.69 mi (1,224.21 km) |
