| Williamsport to Castrovillari | 4,634.53 mi (7,458.56 km) |
| Williamsport to Catania | 4,678.89 mi (7,529.94 km) |
| Williamsport to Catanzaro | 4,688.81 mi (7,545.91 km) |
| Williamsport to Cattolica | 4,326.92 mi (6,963.51 km) |
| Williamsport to Cava de' Tirreni | 4,534.75 mi (7,297.97 km) |
| Williamsport to Cavallino | 4,700.14 mi (7,564.15 km) |
| Williamsport to Cavarzere | 4,257.13 mi (6,851.19 km) |
| Williamsport to Cave | 4,415.58 mi (7,106.20 km) |
| Williamsport to Cavriago | 4,207.73 mi (6,771.69 km) |
| Williamsport to Cavriglia | 4,290.41 mi (6,904.75 km) |
| Williamsport to Cazzago San Martino | 4,155.60 mi (6,687.79 km) |
| Williamsport to Ceccano | 4,442.32 mi (7,149.22 km) |
| Williamsport to Cecina | 4,256.29 mi (6,849.84 km) |
| Williamsport to Cefalu | 4,609.74 mi (7,418.67 km) |
| Williamsport to Ceglie Messapico | 4,656.84 mi (7,494.46 km) |
