| Barberton to Oberkirch | 4,170.99 mi (6,712.56 km) |
| Barberton to Obernburg am Main | 4,167.70 mi (6,707.26 km) |
| Barberton to Obernkirchen | 4,085.28 mi (6,574.62 km) |
| Barberton to Oberschleissheim | 4,318.27 mi (6,949.59 km) |
| Barberton to Oberstdorf | 4,297.94 mi (6,916.87 km) |
| Barberton to Obertraubling | 4,315.46 mi (6,945.06 km) |
| Barberton to Obertshausen | 4,148.05 mi (6,675.65 km) |
| Barberton to Oberursel | 4,133.53 mi (6,652.28 km) |
| Barberton to Ochsenfurt | 4,210.03 mi (6,775.39 km) |
| Barberton to Ochsenhausen | 4,261.03 mi (6,857.47 km) |
| Barberton to Ochtrup | 4,015.15 mi (6,461.77 km) |
| Barberton to Odenthal | 4,049.90 mi (6,517.68 km) |
| Barberton to Oelde | 4,063.24 mi (6,539.15 km) |
| Barberton to Oelsnitz | 4,263.00 mi (6,860.63 km) |
| Barberton to Oer-Erkenschwick | 4,035.41 mi (6,494.36 km) |
