| Pittsburgh to Clarksdale (Mississippi) | 723.75 mi (1,164.76 km) |
| Pittsburgh to Clarkston (Georgia) | 514.51 mi (828.02 km) |
| Pittsburgh to Clarksville (Indiana) | 342.04 mi (550.46 km) |
| Pittsburgh to Clarksville (Tennessee) | 479.41 mi (771.54 km) |
| Pittsburgh to Clawson (Michigan) | 219.02 mi (352.47 km) |
| Pittsburgh to Clay (Alabama) | 591.95 mi (952.65 km) |
| Pittsburgh to Clayton (California) | 2,232.18 mi (3,592.34 km) |
| Pittsburgh to Clayton (Missouri) | 565.09 mi (909.42 km) |
| Pittsburgh to Clayton (North Carolina) | 340.58 mi (548.11 km) |
| Pittsburgh to Clayton (Ohio) | 233.20 mi (375.31 km) |
| Pittsburgh to Clearfield (Utah) | 1,668.04 mi (2,684.45 km) |
| Pittsburgh to Clearlake (California) | 2,247.78 mi (3,617.45 km) |
| Pittsburgh to Clearwater (Florida) | 875.41 mi (1,408.83 km) |
| Pittsburgh to Cleburne (Texas) | 1,116.16 mi (1,796.28 km) |
| Pittsburgh to Clemmons (North Carolina) | 305.36 mi (491.43 km) |
