| Rio Tinto to Oberkirch | 957.51 mi (1,540.96 km) |
| Rio Tinto to Obernburg am Main | 1,041.19 mi (1,675.64 km) |
| Rio Tinto to Obernkirchen | 1,129.39 mi (1,817.57 km) |
| Rio Tinto to Oberschleissheim | 1,097.93 mi (1,766.94 km) |
| Rio Tinto to Oberstdorf | 1,022.89 mi (1,646.18 km) |
| Rio Tinto to Obertraubling | 1,140.38 mi (1,835.26 km) |
| Rio Tinto to Obertshausen | 1,036.81 mi (1,668.58 km) |
| Rio Tinto to Oberursel | 1,031.72 mi (1,660.40 km) |
| Rio Tinto to Ochsenfurt | 1,071.96 mi (1,725.15 km) |
| Rio Tinto to Ochsenhausen | 1,023.60 mi (1,647.33 km) |
| Rio Tinto to Ochtrup | 1,062.23 mi (1,709.49 km) |
| Rio Tinto to Odenthal | 1,009.91 mi (1,625.29 km) |
| Rio Tinto to Oelde | 1,078.53 mi (1,735.73 km) |
| Rio Tinto to Oelsnitz | 1,178.87 mi (1,897.20 km) |
| Rio Tinto to Oer-Erkenschwick | 1,039.89 mi (1,673.54 km) |
