| Cleveland to Oberkirch | 4,153.17 mi (6,683.88 km) |
| Cleveland to Obernburg am Main | 4,149.08 mi (6,677.30 km) |
| Cleveland to Obernkirchen | 4,065.54 mi (6,542.85 km) |
| Cleveland to Oberschleissheim | 4,299.95 mi (6,920.10 km) |
| Cleveland to Oberstdorf | 4,280.24 mi (6,888.38 km) |
| Cleveland to Obertraubling | 4,296.70 mi (6,914.87 km) |
| Cleveland to Obertshausen | 4,129.38 mi (6,645.60 km) |
| Cleveland to Oberursel | 4,114.84 mi (6,622.20 km) |
| Cleveland to Ochsenfurt | 4,191.34 mi (6,745.31 km) |
| Cleveland to Ochsenhausen | 4,243.09 mi (6,828.59 km) |
| Cleveland to Ochtrup | 3,995.74 mi (6,430.52 km) |
| Cleveland to Odenthal | 4,031.05 mi (6,487.35 km) |
| Cleveland to Oelde | 4,043.86 mi (6,507.96 km) |
| Cleveland to Oelsnitz | 4,243.60 mi (6,829.41 km) |
| Cleveland to Oer-Erkenschwick | 4,016.25 mi (6,463.53 km) |
