| Butte to Oberkirch | 5,001.40 mi (8,048.98 km) |
| Butte to Obernburg am Main | 4,960.80 mi (7,983.63 km) |
| Butte to Obernkirchen | 4,829.45 mi (7,772.25 km) |
| Butte to Oberschleissheim | 5,114.85 mi (8,231.56 km) |
| Butte to Oberstdorf | 5,125.18 mi (8,248.17 km) |
| Butte to Obertraubling | 5,091.53 mi (8,194.03 km) |
| Butte to Obertshausen | 4,940.01 mi (7,950.18 km) |
| Butte to Oberursel | 4,925.54 mi (7,926.89 km) |
| Butte to Ochsenfurt | 4,996.67 mi (8,041.36 km) |
| Butte to Ochsenhausen | 5,079.50 mi (8,174.67 km) |
| Butte to Ochtrup | 4,780.66 mi (7,693.73 km) |
| Butte to Odenthal | 4,840.59 mi (7,790.17 km) |
| Butte to Oelde | 4,826.57 mi (7,767.61 km) |
| Butte to Oelsnitz | 5,011.11 mi (8,064.60 km) |
| Butte to Oer-Erkenschwick | 4,812.09 mi (7,744.30 km) |
