| Pittsburgh to Corato | 4,746.99 mi (7,639.55 km) |
| Pittsburgh to Corbetta | 4,269.31 mi (6,870.80 km) |
| Pittsburgh to Corciano | 4,495.60 mi (7,234.96 km) |
| Pittsburgh to Cordenons | 4,406.98 mi (7,092.34 km) |
| Pittsburgh to Cori | 4,579.08 mi (7,369.32 km) |
| Pittsburgh to Coriano | 4,477.62 mi (7,206.03 km) |
| Pittsburgh to Corigliano Calabro | 4,814.90 mi (7,748.84 km) |
| Pittsburgh to Corleone | 4,746.30 mi (7,638.43 km) |
| Pittsburgh to Cormano | 4,276.86 mi (6,882.93 km) |
| Pittsburgh to Cornaredo | 4,273.03 mi (6,876.78 km) |
| Pittsburgh to Cornate d'Adda | 4,285.86 mi (6,897.42 km) |
| Pittsburgh to Cornedo Vicentino | 4,365.04 mi (7,024.85 km) |
| Pittsburgh to Correggio | 4,372.06 mi (7,036.15 km) |
| Pittsburgh to Corridonia | 4,543.11 mi (7,311.43 km) |
| Pittsburgh to Corsico | 4,278.85 mi (6,886.14 km) |
