| Pittsburgh to Cividale del Friuli | 4,432.42 mi (7,133.29 km) |
| Pittsburgh to Civita Castellana | 4,532.65 mi (7,294.59 km) |
| Pittsburgh to Civitanova Marche | 4,550.27 mi (7,322.95 km) |
| Pittsburgh to Civitavecchia | 4,513.98 mi (7,264.54 km) |
| Pittsburgh to Civitella in Val di Chiana | 4,461.03 mi (7,179.34 km) |
| Pittsburgh to Clusone | 4,297.72 mi (6,916.51 km) |
| Pittsburgh to Coccaglio | 4,310.19 mi (6,936.58 km) |
| Pittsburgh to Codigoro | 4,425.30 mi (7,121.84 km) |
| Pittsburgh to Codogno | 4,313.07 mi (6,941.22 km) |
| Pittsburgh to Codroipo | 4,419.09 mi (7,111.84 km) |
| Pittsburgh to Cogoleto | 4,295.64 mi (6,913.17 km) |
| Pittsburgh to Colle di Val d'Elsa | 4,436.94 mi (7,140.57 km) |
| Pittsburgh to Colle Salvetti | 4,402.00 mi (7,084.34 km) |
| Pittsburgh to Collecchio | 4,349.12 mi (6,999.23 km) |
| Pittsburgh to Colleferro | 4,580.12 mi (7,370.99 km) |
