| Gahanna to Denizli | 5,551.63 mi (8,934.49 km) |
| Gahanna to Derecik | 6,144.55 mi (9,888.71 km) |
| Gahanna to Dereli | 5,749.25 mi (9,252.52 km) |
| Gahanna to Derik | 5,990.04 mi (9,640.04 km) |
| Gahanna to Derinkuyu | 5,737.73 mi (9,233.98 km) |
| Gahanna to Develi | 5,764.92 mi (9,277.74 km) |
| Gahanna to Dicle | 5,929.77 mi (9,543.04 km) |
| Gahanna to Digor | 5,935.32 mi (9,551.98 km) |
| Gahanna to Dikili | 5,403.35 mi (8,695.85 km) |
| Gahanna to Divrigi | 5,809.18 mi (9,348.98 km) |
| Gahanna to Diyadin | 5,989.39 mi (9,638.99 km) |
| Gahanna to Diyarbakir | 5,960.19 mi (9,591.99 km) |
| Gahanna to Doganhisar | 5,634.02 mi (9,067.08 km) |
| Gahanna to Dogansehir | 5,866.67 mi (9,441.49 km) |
| Gahanna to Dogubayazit | 6,002.29 mi (9,659.76 km) |
