| Pittsburgh to Cognac | 3,866.65 mi (6,222.77 km) |
| Pittsburgh to Cogolin | 4,244.35 mi (6,830.62 km) |
| Pittsburgh to Colmar | 4,116.62 mi (6,625.06 km) |
| Pittsburgh to Colombes | 3,881.62 mi (6,246.86 km) |
| Pittsburgh to Colomiers | 4,003.95 mi (6,443.74 km) |
| Pittsburgh to Combs-la-Ville | 3,901.71 mi (6,279.20 km) |
| Pittsburgh to Comines | 3,859.67 mi (6,211.54 km) |
| Pittsburgh to Compiegne | 3,890.77 mi (6,261.59 km) |
| Pittsburgh to Concarneau | 3,650.62 mi (5,875.10 km) |
| Pittsburgh to Conde-sur-l'Escaut | 3,891.85 mi (6,263.33 km) |
| Pittsburgh to Conflans-Sainte-Honorine | 3,873.09 mi (6,233.13 km) |
| Pittsburgh to Corbas | 4,093.01 mi (6,587.06 km) |
| Pittsburgh to Corbeil-Essonnes | 3,900.14 mi (6,276.66 km) |
| Pittsburgh to Cormeilles-en-Parisis | 3,878.07 mi (6,241.14 km) |
| Pittsburgh to Cosne sur Loire | 3,954.54 mi (6,364.22 km) |
