| Portchester to Castelfidardo | 854.62 mi (1,375.38 km) |
| Portchester to Castelfiorentino | 754.65 mi (1,214.49 km) |
| Portchester to Castelfranco di Sopra | 774.38 mi (1,246.24 km) |
| Portchester to Castelfranco di Sotto | 742.14 mi (1,194.36 km) |
| Portchester to Castelfranco Emilia | 710.10 mi (1,142.79 km) |
| Portchester to Castelfranco Veneto | 697.45 mi (1,122.43 km) |
| Portchester to Castellabate | 1,062.14 mi (1,709.35 km) |
| Portchester to Castellammare del Golfo | 1,119.05 mi (1,800.93 km) |
| Portchester to Castellammare di Stabia | 1,024.17 mi (1,648.24 km) |
| Portchester to Castellamonte | 554.57 mi (892.50 km) |
| Portchester to Castellana Grotte | 1,111.78 mi (1,789.24 km) |
| Portchester to Castellaneta | 1,115.29 mi (1,794.89 km) |
| Portchester to Castellanza | 584.84 mi (941.20 km) |
| Portchester to Castellarano | 701.64 mi (1,129.18 km) |
| Portchester to Castelleone | 630.78 mi (1,015.14 km) |
