| Portchester to Cortona | 806.61 mi (1,298.12 km) |
| Portchester to Cosenza | 1,158.37 mi (1,864.22 km) |
| Portchester to Cossato | 561.15 mi (903.09 km) |
| Portchester to Costa Volpino | 619.79 mi (997.46 km) |
| Portchester to Creazzo | 685.34 mi (1,102.94 km) |
| Portchester to Crema | 624.71 mi (1,005.38 km) |
| Portchester to Cremona | 648.15 mi (1,043.09 km) |
| Portchester to Crevalcore | 708.20 mi (1,139.74 km) |
| Portchester to Crispiano | 1,128.02 mi (1,815.38 km) |
| Portchester to Crosia | 1,162.80 mi (1,871.35 km) |
| Portchester to Crotone | 1,200.18 mi (1,931.50 km) |
| Portchester to Cuneo | 601.05 mi (967.30 km) |
| Portchester to Cuorgne | 552.09 mi (888.51 km) |
| Portchester to Cusano Milanino | 598.15 mi (962.62 km) |
| Portchester to Cutro | 1,198.05 mi (1,928.07 km) |
