| Pittsburgh to Carmona | 3,876.82 mi (6,239.14 km) |
| Pittsburgh to Cartagena | 4,095.66 mi (6,591.32 km) |
| Pittsburgh to Cartama | 3,950.26 mi (6,357.33 km) |
| Pittsburgh to Cartaya | 3,809.07 mi (6,130.10 km) |
| Pittsburgh to Caspe | 4,018.74 mi (6,467.53 km) |
| Pittsburgh to Cassa de la Selva | 4,129.06 mi (6,645.08 km) |
| Pittsburgh to Castalla | 4,076.53 mi (6,560.54 km) |
| Pittsburgh to Castellbisbal | 4,102.59 mi (6,602.48 km) |
| Pittsburgh to Castelldefels | 4,108.91 mi (6,612.66 km) |
| Pittsburgh to Castello de Ampurias | 4,125.69 mi (6,639.66 km) |
| Pittsburgh to Castellon de la Plana | 4,059.89 mi (6,533.75 km) |
| Pittsburgh to Castilleja de la Cuesta | 3,859.33 mi (6,210.99 km) |
| Pittsburgh to Catarroja | 4,061.95 mi (6,537.07 km) |
| Pittsburgh to Catral | 4,084.99 mi (6,574.16 km) |
| Pittsburgh to Caudete | 4,057.95 mi (6,530.64 km) |
