| Keystone to Cernavoda | 5,792.98 mi (9,322.90 km) |
| Keystone to Chitila | 5,701.83 mi (9,176.22 km) |
| Keystone to Cisnadie | 5,582.07 mi (8,983.48 km) |
| Keystone to Cluj-Napoca | 5,521.39 mi (8,885.82 km) |
| Keystone to Codlea | 5,635.78 mi (9,069.92 km) |
| Keystone to Comanesti | 5,649.46 mi (9,091.93 km) |
| Keystone to Comarnic | 5,660.02 mi (9,108.92 km) |
| Keystone to Constanta | 5,824.19 mi (9,373.13 km) |
| Keystone to Corabia | 5,666.70 mi (9,119.68 km) |
| Keystone to Costesti | 5,650.00 mi (9,092.80 km) |
| Keystone to Covasna | 5,660.37 mi (9,109.49 km) |
| Keystone to Craiova | 5,617.45 mi (9,040.41 km) |
| Keystone to Cristuru Secuiesc | 5,597.43 mi (9,008.19 km) |
| Keystone to Cugir | 5,544.89 mi (8,923.63 km) |
| Keystone to Cumpana | 5,823.11 mi (9,371.40 km) |
