| Pittsburgh to Cockermouth | 3,514.96 mi (5,656.79 km) |
| Pittsburgh to Colchester | 3,745.43 mi (6,027.68 km) |
| Pittsburgh to Coleford | 3,607.74 mi (5,806.10 km) |
| Pittsburgh to Colne | 3,577.75 mi (5,757.83 km) |
| Pittsburgh to Colwyn Bay | 3,530.81 mi (5,682.29 km) |
| Pittsburgh to Congleton | 3,591.74 mi (5,780.35 km) |
| Pittsburgh to Conisbrough | 3,622.98 mi (5,830.62 km) |
| Pittsburgh to Connahs Quay | 3,557.60 mi (5,725.40 km) |
| Pittsburgh to Consett | 3,569.13 mi (5,743.96 km) |
| Pittsburgh to Conwy | 3,525.92 mi (5,674.43 km) |
| Pittsburgh to Cookstown | 3,385.41 mi (5,448.28 km) |
| Pittsburgh to Corby | 3,667.13 mi (5,901.68 km) |
| Pittsburgh to Corfe Mullen | 3,656.73 mi (5,884.94 km) |
| Pittsburgh to Corsham | 3,633.64 mi (5,847.78 km) |
| Pittsburgh to Coseley | 3,611.14 mi (5,811.57 km) |
