| Corvallis to Oberkirch | 5,364.03 mi (8,632.58 km) |
| Corvallis to Obernburg am Main | 5,314.24 mi (8,552.44 km) |
| Corvallis to Obernkirchen | 5,172.84 mi (8,324.88 km) |
| Corvallis to Oberschleissheim | 5,465.48 mi (8,795.84 km) |
| Corvallis to Oberstdorf | 5,484.03 mi (8,825.69 km) |
| Corvallis to Obertraubling | 5,437.04 mi (8,750.07 km) |
| Corvallis to Obertshausen | 5,293.65 mi (8,519.31 km) |
| Corvallis to Oberursel | 5,279.55 mi (8,496.62 km) |
| Corvallis to Ochsenfurt | 5,347.44 mi (8,605.88 km) |
| Corvallis to Ochsenhausen | 5,437.02 mi (8,750.05 km) |
| Corvallis to Ochtrup | 5,131.15 mi (8,257.78 km) |
| Corvallis to Odenthal | 5,196.36 mi (8,362.74 km) |
| Corvallis to Oelde | 5,175.27 mi (8,328.78 km) |
| Corvallis to Oelsnitz | 5,350.85 mi (8,611.37 km) |
| Corvallis to Oer-Erkenschwick | 5,164.79 mi (8,311.93 km) |
