| Perth Amboy to Oberkirch | 3,894.83 mi (6,268.12 km) |
| Perth Amboy to Obernburg am Main | 3,899.79 mi (6,276.11 km) |
| Perth Amboy to Obernkirchen | 3,829.96 mi (6,163.73 km) |
| Perth Amboy to Oberschleissheim | 4,046.81 mi (6,512.71 km) |
| Perth Amboy to Oberstdorf | 4,020.21 mi (6,469.90 km) |
| Perth Amboy to Obertraubling | 4,048.51 mi (6,515.44 km) |
| Perth Amboy to Obertshausen | 3,880.78 mi (6,245.51 km) |
| Perth Amboy to Oberursel | 3,866.53 mi (6,222.58 km) |
| Perth Amboy to Ochsenfurt | 3,942.75 mi (6,345.24 km) |
| Perth Amboy to Ochsenhausen | 3,985.85 mi (6,414.60 km) |
| Perth Amboy to Ochtrup | 3,756.48 mi (6,045.47 km) |
| Perth Amboy to Odenthal | 3,784.84 mi (6,091.10 km) |
| Perth Amboy to Oelde | 3,804.06 mi (6,122.05 km) |
| Perth Amboy to Oelsnitz | 4,003.20 mi (6,442.53 km) |
| Perth Amboy to Oer-Erkenschwick | 3,773.79 mi (6,073.33 km) |
