| Greenock to Cernavoda | 1,637.23 mi (2,634.87 km) |
| Greenock to Chitila | 1,553.37 mi (2,499.90 km) |
| Greenock to Cisnadie | 1,431.40 mi (2,303.62 km) |
| Greenock to Cluj-Napoca | 1,364.44 mi (2,195.85 km) |
| Greenock to Codlea | 1,480.05 mi (2,381.91 km) |
| Greenock to Comanesti | 1,486.16 mi (2,391.74 km) |
| Greenock to Comarnic | 1,506.93 mi (2,425.17 km) |
| Greenock to Constanta | 1,667.39 mi (2,683.41 km) |
| Greenock to Corabia | 1,533.67 mi (2,468.21 km) |
| Greenock to Costesti | 1,505.44 mi (2,422.76 km) |
| Greenock to Covasna | 1,501.08 mi (2,415.75 km) |
| Greenock to Craiova | 1,482.34 mi (2,385.60 km) |
| Greenock to Cristuru Secuiesc | 1,438.94 mi (2,315.75 km) |
| Greenock to Cugir | 1,396.57 mi (2,247.57 km) |
| Greenock to Cumpana | 1,666.95 mi (2,682.70 km) |
