| Gahanna to Norwich | 3,872.90 mi (6,232.83 km) |
| Gahanna to Nottingham | 3,770.00 mi (6,067.23 km) |
| Gahanna to Nuneaton | 3,768.58 mi (6,064.94 km) |
| Gahanna to Oadby | 3,781.92 mi (6,086.42 km) |
| Gahanna to Oakengates | 3,725.83 mi (5,996.15 km) |
| Gahanna to Oakham | 3,793.41 mi (6,104.91 km) |
| Gahanna to Oldbury | 3,747.59 mi (6,031.17 km) |
| Gahanna to Oldham | 3,718.03 mi (5,983.59 km) |
| Gahanna to Ollerton | 3,768.77 mi (6,065.25 km) |
| Gahanna to Olton | 3,757.52 mi (6,047.15 km) |
| Gahanna to Omagh | 3,496.26 mi (5,626.68 km) |
| Gahanna to Ormesby | 3,729.25 mi (6,001.65 km) |
| Gahanna to Ormskirk | 3,687.85 mi (5,935.03 km) |
| Gahanna to Orpington | 3,860.59 mi (6,213.02 km) |
| Gahanna to Ossett | 3,735.31 mi (6,011.41 km) |
