| Porterville to Collegno | 5,915.48 mi (9,520.04 km) |
| Porterville to Cologno al Serio | 5,954.96 mi (9,583.58 km) |
| Porterville to Cologno Monzese | 5,944.95 mi (9,567.48 km) |
| Porterville to Colorno | 6,010.78 mi (9,673.41 km) |
| Porterville to Comacchio | 6,077.89 mi (9,781.42 km) |
| Porterville to Comiso | 6,582.72 mi (10,593.87 km) |
| Porterville to Como | 5,924.04 mi (9,533.81 km) |
| Porterville to Concordia Sagittaria | 6,038.87 mi (9,718.63 km) |
| Porterville to Concorezzo | 5,943.46 mi (9,565.08 km) |
| Porterville to Conegliano | 6,016.17 mi (9,682.09 km) |
| Porterville to Conselice | 6,077.42 mi (9,780.67 km) |
| Porterville to Conselve | 6,039.25 mi (9,719.24 km) |
| Porterville to Conversano | 6,433.17 mi (10,353.19 km) |
| Porterville to Copertino | 6,500.59 mi (10,461.69 km) |
| Porterville to Copparo | 6,056.47 mi (9,746.95 km) |
