| Allentown to Cabestany | 3,897.78 mi (6,272.86 km) |
| Allentown to Cabries | 3,983.35 mi (6,410.59 km) |
| Allentown to Cachan | 3,694.63 mi (5,945.93 km) |
| Allentown to Caen | 3,570.87 mi (5,746.76 km) |
| Allentown to Cagnes-sur-Mer | 4,054.51 mi (6,525.10 km) |
| Allentown to Cahors | 3,776.85 mi (6,078.26 km) |
| Allentown to Calais | 3,619.98 mi (5,825.80 km) |
| Allentown to Caluire-et-Cuire | 3,887.00 mi (6,255.52 km) |
| Allentown to Cambrai | 3,695.81 mi (5,947.83 km) |
| Allentown to Canet-en-Roussillon | 3,899.92 mi (6,276.31 km) |
| Allentown to Cannes | 4,052.20 mi (6,521.38 km) |
| Allentown to Canteleu | 3,623.26 mi (5,831.08 km) |
| Allentown to Capbreton | 3,670.16 mi (5,906.56 km) |
| Allentown to Carcassonne | 3,854.64 mi (6,203.44 km) |
| Allentown to Carmaux | 3,820.71 mi (6,148.84 km) |
