| Troy to Oberkirch | 4,161.23 mi (6,696.85 km) |
| Troy to Obernburg am Main | 4,153.96 mi (6,685.15 km) |
| Troy to Obernkirchen | 4,065.89 mi (6,543.42 km) |
| Troy to Oberschleissheim | 4,305.89 mi (6,929.67 km) |
| Troy to Oberstdorf | 4,288.67 mi (6,901.94 km) |
| Troy to Obertraubling | 4,300.92 mi (6,921.67 km) |
| Troy to Obertshausen | 4,134.06 mi (6,653.13 km) |
| Troy to Oberursel | 4,119.45 mi (6,629.61 km) |
| Troy to Ochsenfurt | 4,195.90 mi (6,752.65 km) |
| Troy to Ochsenhausen | 4,250.59 mi (6,840.66 km) |
| Troy to Ochtrup | 3,997.48 mi (6,433.32 km) |
| Troy to Odenthal | 4,035.10 mi (6,493.86 km) |
| Troy to Oelde | 4,045.68 mi (6,510.89 km) |
| Troy to Oelsnitz | 4,245.24 mi (6,832.05 km) |
| Troy to Oer-Erkenschwick | 4,019.04 mi (6,468.02 km) |
