| Williamsport to Celano | 4,432.20 mi (7,132.93 km) |
| Williamsport to Cento | 4,238.15 mi (6,820.65 km) |
| Williamsport to Cepagatti | 4,443.29 mi (7,150.79 km) |
| Williamsport to Ceprano | 4,450.86 mi (7,162.97 km) |
| Williamsport to Cercola | 4,513.13 mi (7,263.18 km) |
| Williamsport to Cerea | 4,218.78 mi (6,789.48 km) |
| Williamsport to Cerese | 4,204.52 mi (6,766.52 km) |
| Williamsport to Cerignola | 4,564.07 mi (7,345.16 km) |
| Williamsport to Cermenate | 4,112.02 mi (6,617.65 km) |
| Williamsport to Cernusco sul Naviglio | 4,128.78 mi (6,644.62 km) |
| Williamsport to Cerreto Guidi | 4,255.81 mi (6,849.06 km) |
| Williamsport to Cerro Maggiore | 4,109.81 mi (6,614.10 km) |
| Williamsport to Certaldo | 4,270.42 mi (6,872.58 km) |
| Williamsport to Cerveteri | 4,372.73 mi (7,037.23 km) |
| Williamsport to Cervia | 4,300.36 mi (6,920.76 km) |
