| Romanshorn to Cernavoda | 922.01 mi (1,483.83 km) |
| Romanshorn to Chitila | 823.12 mi (1,324.68 km) |
| Romanshorn to Cisnadie | 712.25 mi (1,146.25 km) |
| Romanshorn to Cluj-Napoca | 669.64 mi (1,077.68 km) |
| Romanshorn to Codlea | 772.66 mi (1,243.48 km) |
| Romanshorn to Comanesti | 807.67 mi (1,299.83 km) |
| Romanshorn to Comarnic | 790.27 mi (1,271.82 km) |
| Romanshorn to Constanta | 953.96 mi (1,535.25 km) |
| Romanshorn to Corabia | 775.25 mi (1,247.65 km) |
| Romanshorn to Costesti | 768.45 mi (1,236.70 km) |
| Romanshorn to Covasna | 804.46 mi (1,294.66 km) |
| Romanshorn to Craiova | 728.38 mi (1,172.22 km) |
| Romanshorn to Cristuru Secuiesc | 743.72 mi (1,196.90 km) |
| Romanshorn to Cugir | 673.28 mi (1,083.53 km) |
| Romanshorn to Cumpana | 951.72 mi (1,531.64 km) |
