| Portales to Cividale del Friuli | 5,637.58 mi (9,072.81 km) |
| Portales to Civita Castellana | 5,774.07 mi (9,292.47 km) |
| Portales to Civitanova Marche | 5,777.85 mi (9,298.55 km) |
| Portales to Civitavecchia | 5,759.53 mi (9,269.06 km) |
| Portales to Civitella in Val di Chiana | 5,696.67 mi (9,167.91 km) |
| Portales to Clusone | 5,520.35 mi (8,884.15 km) |
| Portales to Coccaglio | 5,535.48 mi (8,908.49 km) |
| Portales to Codigoro | 5,647.51 mi (9,088.79 km) |
| Portales to Codogno | 5,542.96 mi (8,920.53 km) |
| Portales to Codroipo | 5,627.58 mi (9,056.72 km) |
| Portales to Cogoleto | 5,536.29 mi (8,909.80 km) |
| Portales to Colle di Val d'Elsa | 5,675.23 mi (9,133.40 km) |
| Portales to Colle Salvetti | 5,641.45 mi (9,079.03 km) |
| Portales to Collecchio | 5,580.29 mi (8,980.61 km) |
| Portales to Colleferro | 5,823.18 mi (9,371.50 km) |
