| Gahanna to Ondokuzmayis | 5,628.22 mi (9,057.75 km) |
| Gahanna to Ordu | 5,717.28 mi (9,201.08 km) |
| Gahanna to Ortahisar | 5,730.06 mi (9,221.65 km) |
| Gahanna to Ortakent | 5,511.89 mi (8,870.53 km) |
| Gahanna to Ortaklar | 5,483.40 mi (8,824.68 km) |
| Gahanna to Ortakoy | 5,693.65 mi (9,163.04 km) |
| Gahanna to Ortakoy | 5,660.77 mi (9,110.14 km) |
| Gahanna to Osmaneli | 5,463.70 mi (8,792.97 km) |
| Gahanna to Osmaniye | 5,859.82 mi (9,430.48 km) |
| Gahanna to Ozdere | 5,462.26 mi (8,790.66 km) |
| Gahanna to Palu | 5,908.14 mi (9,508.23 km) |
| Gahanna to Pamukkale | 5,545.76 mi (8,925.04 km) |
| Gahanna to Patnos | 5,979.14 mi (9,622.49 km) |
| Gahanna to Pazar | 5,699.24 mi (9,172.04 km) |
| Gahanna to Pazarcik | 5,877.16 mi (9,458.37 km) |
