| Gahanna to Cernavoda | 5,201.27 mi (8,370.64 km) |
| Gahanna to Chitila | 5,117.85 mi (8,236.39 km) |
| Gahanna to Cisnadie | 4,995.92 mi (8,040.16 km) |
| Gahanna to Cluj-Napoca | 4,928.69 mi (7,931.97 km) |
| Gahanna to Codlea | 5,044.32 mi (8,118.05 km) |
| Gahanna to Comanesti | 5,047.84 mi (8,123.72 km) |
| Gahanna to Comarnic | 5,071.42 mi (8,161.66 km) |
| Gahanna to Constanta | 5,231.16 mi (8,418.73 km) |
| Gahanna to Corabia | 5,095.46 mi (8,200.35 km) |
| Gahanna to Costesti | 5,069.50 mi (8,158.58 km) |
| Gahanna to Covasna | 5,064.54 mi (8,150.59 km) |
| Gahanna to Craiova | 5,044.46 mi (8,118.27 km) |
| Gahanna to Cristuru Secuiesc | 5,002.77 mi (8,051.19 km) |
| Gahanna to Cugir | 4,960.91 mi (7,983.81 km) |
| Gahanna to Cumpana | 5,230.85 mi (8,418.24 km) |
