| Euclid to Cernavoda | 5,074.70 mi (8,166.95 km) |
| Euclid to Chitila | 4,991.69 mi (8,033.34 km) |
| Euclid to Cisnadie | 4,869.72 mi (7,837.05 km) |
| Euclid to Cluj-Napoca | 4,802.22 mi (7,728.43 km) |
| Euclid to Codlea | 4,917.85 mi (7,914.51 km) |
| Euclid to Comanesti | 4,920.92 mi (7,919.45 km) |
| Euclid to Comarnic | 4,945.06 mi (7,958.30 km) |
| Euclid to Constanta | 5,104.51 mi (8,214.92 km) |
| Euclid to Corabia | 4,969.94 mi (7,998.34 km) |
| Euclid to Costesti | 4,943.53 mi (7,955.85 km) |
| Euclid to Covasna | 4,937.86 mi (7,946.71 km) |
| Euclid to Craiova | 4,918.88 mi (7,916.18 km) |
| Euclid to Cristuru Secuiesc | 4,876.17 mi (7,847.45 km) |
| Euclid to Cugir | 4,834.83 mi (7,780.91 km) |
| Euclid to Cumpana | 5,104.25 mi (8,214.49 km) |
