| Perth Amboy to Oerlinghausen | 3,820.65 mi (6,148.74 km) |
| Perth Amboy to Oestrich-Winkel | 3,849.03 mi (6,194.42 km) |
| Perth Amboy to Offenburg | 3,890.57 mi (6,261.27 km) |
| Perth Amboy to Oftersheim | 3,890.91 mi (6,261.81 km) |
| Perth Amboy to Ohrdruf | 3,934.25 mi (6,331.56 km) |
| Perth Amboy to Ohringen | 3,933.24 mi (6,329.94 km) |
| Perth Amboy to Olbernhau | 4,041.18 mi (6,503.65 km) |
| Perth Amboy to Olching | 4,038.16 mi (6,498.79 km) |
| Perth Amboy to Oldenburg | 3,771.48 mi (6,069.61 km) |
| Perth Amboy to Oldenburg in Holstein | 3,841.02 mi (6,181.53 km) |
| Perth Amboy to Olfen | 3,777.03 mi (6,078.54 km) |
| Perth Amboy to Olpe | 3,813.89 mi (6,137.87 km) |
| Perth Amboy to Olsberg | 3,830.47 mi (6,164.55 km) |
| Perth Amboy to Oranienburg | 3,973.33 mi (6,394.46 km) |
| Perth Amboy to Ortenberg | 3,881.36 mi (6,246.45 km) |
