| Williamsport to Cabestany | 3,945.71 mi (6,350.01 km) |
| Williamsport to Cabries | 4,028.79 mi (6,483.71 km) |
| Williamsport to Cachan | 3,733.26 mi (6,008.10 km) |
| Williamsport to Caen | 3,610.08 mi (5,809.87 km) |
| Williamsport to Cagnes-sur-Mer | 4,098.60 mi (6,596.05 km) |
| Williamsport to Cahors | 3,822.94 mi (6,152.43 km) |
| Williamsport to Calais | 3,655.13 mi (5,882.36 km) |
| Williamsport to Caluire-et-Cuire | 3,929.18 mi (6,323.40 km) |
| Williamsport to Cambrai | 3,731.66 mi (6,005.53 km) |
| Williamsport to Canet-en-Roussillon | 3,947.78 mi (6,353.34 km) |
| Williamsport to Cannes | 4,096.53 mi (6,592.73 km) |
| Williamsport to Canteleu | 3,661.37 mi (5,892.41 km) |
| Williamsport to Capbreton | 3,719.01 mi (5,985.18 km) |
| Williamsport to Carcassonne | 3,902.12 mi (6,279.85 km) |
| Williamsport to Carmaux | 3,867.03 mi (6,223.38 km) |
