| Portales to Cernavoda | 6,213.05 mi (9,998.95 km) |
| Portales to Chitila | 6,140.11 mi (9,881.54 km) |
| Portales to Cisnadie | 6,018.86 mi (9,686.41 km) |
| Portales to Cluj-Napoca | 5,946.25 mi (9,569.57 km) |
| Portales to Codlea | 6,060.32 mi (9,753.15 km) |
| Portales to Comanesti | 6,052.35 mi (9,740.32 km) |
| Portales to Comarnic | 6,089.85 mi (9,800.67 km) |
| Portales to Constanta | 6,240.70 mi (10,043.44 km) |
| Portales to Corabia | 6,131.41 mi (9,867.55 km) |
| Portales to Costesti | 6,096.61 mi (9,811.54 km) |
| Portales to Covasna | 6,075.19 mi (9,777.07 km) |
| Portales to Craiova | 6,079.86 mi (9,784.59 km) |
| Portales to Cristuru Secuiesc | 6,016.30 mi (9,682.30 km) |
| Portales to Cugir | 5,987.01 mi (9,635.16 km) |
| Portales to Cumpana | 6,241.27 mi (10,044.36 km) |
