| Parsippany to Oerlinghausen | 3,810.27 mi (6,132.04 km) |
| Parsippany to Oestrich-Winkel | 3,839.61 mi (6,179.25 km) |
| Parsippany to Offenburg | 3,881.83 mi (6,247.21 km) |
| Parsippany to Oftersheim | 3,881.68 mi (6,246.96 km) |
| Parsippany to Ohrdruf | 3,924.11 mi (6,315.24 km) |
| Parsippany to Ohringen | 3,923.97 mi (6,315.01 km) |
| Parsippany to Olbernhau | 4,030.77 mi (6,486.89 km) |
| Parsippany to Olching | 4,029.06 mi (6,484.14 km) |
| Parsippany to Oldenburg | 3,760.64 mi (6,052.16 km) |
| Parsippany to Oldenburg in Holstein | 3,829.38 mi (6,162.79 km) |
| Parsippany to Olfen | 3,766.92 mi (6,062.27 km) |
| Parsippany to Olpe | 3,804.04 mi (6,122.01 km) |
| Parsippany to Olsberg | 3,820.39 mi (6,148.32 km) |
| Parsippany to Oranienburg | 3,962.07 mi (6,376.34 km) |
| Parsippany to Ortenberg | 3,871.64 mi (6,230.81 km) |
