| Phoenix to Oberkirch | 5,674.03 mi (9,131.47 km) |
| Phoenix to Obernburg am Main | 5,646.29 mi (9,086.83 km) |
| Phoenix to Obernkirchen | 5,529.50 mi (8,898.88 km) |
| Phoenix to Oberschleissheim | 5,801.62 mi (9,336.81 km) |
| Phoenix to Oberstdorf | 5,800.98 mi (9,335.78 km) |
| Phoenix to Obertraubling | 5,785.13 mi (9,310.26 km) |
| Phoenix to Obertshausen | 5,625.56 mi (9,053.47 km) |
| Phoenix to Oberursel | 5,610.83 mi (9,029.76 km) |
| Phoenix to Ochsenfurt | 5,685.03 mi (9,149.17 km) |
| Phoenix to Ochsenhausen | 5,757.81 mi (9,266.29 km) |
| Phoenix to Ochtrup | 5,472.69 mi (8,807.44 km) |
| Phoenix to Odenthal | 5,524.91 mi (8,891.48 km) |
| Phoenix to Oelde | 5,520.13 mi (8,883.79 km) |
| Phoenix to Oelsnitz | 5,712.90 mi (9,194.03 km) |
| Phoenix to Oer-Erkenschwick | 5,500.81 mi (8,852.70 km) |
