| Porterville to Cividale del Friuli | 6,037.26 mi (9,716.02 km) |
| Porterville to Civita Castellana | 6,216.77 mi (10,004.92 km) |
| Porterville to Civitanova Marche | 6,201.50 mi (9,980.35 km) |
| Porterville to Civitavecchia | 6,208.51 mi (9,991.63 km) |
| Porterville to Civitella in Val di Chiana | 6,133.98 mi (9,871.68 km) |
| Porterville to Clusone | 5,946.49 mi (9,569.95 km) |
| Porterville to Coccaglio | 5,964.52 mi (9,598.97 km) |
| Porterville to Codigoro | 6,068.60 mi (9,766.46 km) |
| Porterville to Codogno | 5,977.78 mi (9,620.32 km) |
| Porterville to Codroipo | 6,031.81 mi (9,707.26 km) |
| Porterville to Cogoleto | 5,985.81 mi (9,633.23 km) |
| Porterville to Colle di Val d'Elsa | 6,116.87 mi (9,844.15 km) |
| Porterville to Colle Salvetti | 6,085.81 mi (9,794.16 km) |
| Porterville to Collecchio | 6,015.54 mi (9,681.08 km) |
| Porterville to Colleferro | 6,266.57 mi (10,085.07 km) |
