| Williamsport to Castelfidardo | 4,379.81 mi (7,048.62 km) |
| Williamsport to Castelfiorentino | 4,265.36 mi (6,864.44 km) |
| Williamsport to Castelfranco di Sopra | 4,289.72 mi (6,903.64 km) |
| Williamsport to Castelfranco di Sotto | 4,252.51 mi (6,843.76 km) |
| Williamsport to Castelfranco Emilia | 4,233.32 mi (6,812.86 km) |
| Williamsport to Castelfranco Veneto | 4,232.05 mi (6,810.83 km) |
| Williamsport to Castellabate | 4,562.19 mi (7,342.13 km) |
| Williamsport to Castellammare del Golfo | 4,559.26 mi (7,337.42 km) |
| Williamsport to Castellammare di Stabia | 4,525.45 mi (7,283.01 km) |
| Williamsport to Castellamonte | 4,064.81 mi (6,541.69 km) |
| Williamsport to Castellana Grotte | 4,633.28 mi (7,456.54 km) |
| Williamsport to Castellaneta | 4,633.35 mi (7,456.65 km) |
| Williamsport to Castellanza | 4,107.14 mi (6,609.80 km) |
| Williamsport to Castellarano | 4,223.01 mi (6,796.27 km) |
| Williamsport to Castelleone | 4,154.36 mi (6,685.80 km) |
