| Butler to Oberkirch | 4,109.38 mi (6,613.42 km) |
| Butler to Obernburg am Main | 4,108.06 mi (6,611.29 km) |
| Butler to Obernkirchen | 4,028.59 mi (6,483.39 km) |
| Butler to Oberschleissheim | 4,257.88 mi (6,852.39 km) |
| Butler to Oberstdorf | 4,236.03 mi (6,817.23 km) |
| Butler to Obertraubling | 4,256.14 mi (6,849.60 km) |
| Butler to Obertshausen | 4,088.56 mi (6,579.90 km) |
| Butler to Oberursel | 4,074.09 mi (6,556.62 km) |
| Butler to Ochsenfurt | 4,150.57 mi (6,679.70 km) |
| Butler to Ochsenhausen | 4,199.71 mi (6,758.79 km) |
| Butler to Ochtrup | 3,957.62 mi (6,369.17 km) |
| Butler to Odenthal | 3,990.87 mi (6,422.68 km) |
| Butler to Oelde | 4,005.62 mi (6,446.42 km) |
| Butler to Oelsnitz | 4,205.36 mi (6,767.87 km) |
| Butler to Oer-Erkenschwick | 3,977.19 mi (6,400.66 km) |
