| Philadelphia to Castelfidardo | 4,348.16 mi (6,997.69 km) |
| Philadelphia to Castelfiorentino | 4,231.59 mi (6,810.09 km) |
| Philadelphia to Castelfranco di Sopra | 4,256.55 mi (6,850.26 km) |
| Philadelphia to Castelfranco di Sotto | 4,218.76 mi (6,789.44 km) |
| Philadelphia to Castelfranco Emilia | 4,201.80 mi (6,762.15 km) |
| Philadelphia to Castelfranco Veneto | 4,203.69 mi (6,765.19 km) |
| Philadelphia to Castellabate | 4,525.36 mi (7,282.87 km) |
| Philadelphia to Castellammare del Golfo | 4,515.83 mi (7,267.52 km) |
| Philadelphia to Castellammare di Stabia | 4,488.99 mi (7,224.33 km) |
| Philadelphia to Castellamonte | 4,032.14 mi (6,489.09 km) |
| Philadelphia to Castellana Grotte | 4,599.93 mi (7,402.87 km) |
| Philadelphia to Castellaneta | 4,599.26 mi (7,401.80 km) |
| Philadelphia to Castellanza | 4,076.01 mi (6,559.71 km) |
| Philadelphia to Castellarano | 4,191.19 mi (6,745.06 km) |
| Philadelphia to Castelleone | 4,123.26 mi (6,635.74 km) |
