| Boise to Oberkirch | 5,232.65 mi (8,421.14 km) |
| Boise to Obernburg am Main | 5,190.74 mi (8,353.68 km) |
| Boise to Obernkirchen | 5,057.77 mi (8,139.70 km) |
| Boise to Oberschleissheim | 5,344.48 mi (8,601.10 km) |
| Boise to Oberstdorf | 5,355.98 mi (8,619.62 km) |
| Boise to Obertraubling | 5,320.37 mi (8,562.31 km) |
| Boise to Obertshausen | 5,169.97 mi (8,320.26 km) |
| Boise to Oberursel | 5,155.54 mi (8,297.04 km) |
| Boise to Ochsenfurt | 5,226.24 mi (8,410.82 km) |
| Boise to Ochsenhausen | 5,310.10 mi (8,545.78 km) |
| Boise to Ochtrup | 5,010.04 mi (8,062.89 km) |
| Boise to Odenthal | 5,070.79 mi (8,160.64 km) |
| Boise to Oelde | 5,055.71 mi (8,136.38 km) |
| Boise to Oelsnitz | 5,238.98 mi (8,431.33 km) |
| Boise to Oer-Erkenschwick | 5,041.82 mi (8,114.02 km) |
