| Florham Park to Oberkirch | 3,888.99 mi (6,258.72 km) |
| Florham Park to Obernburg am Main | 3,893.40 mi (6,265.82 km) |
| Florham Park to Obernkirchen | 3,822.75 mi (6,152.12 km) |
| Florham Park to Oberschleissheim | 4,040.68 mi (6,502.85 km) |
| Florham Park to Oberstdorf | 4,014.50 mi (6,460.72 km) |
| Florham Park to Obertraubling | 4,042.08 mi (6,505.10 km) |
| Florham Park to Obertshausen | 3,874.34 mi (6,235.15 km) |
| Florham Park to Oberursel | 3,860.07 mi (6,212.18 km) |
| Florham Park to Ochsenfurt | 3,936.32 mi (6,334.90 km) |
| Florham Park to Ochsenhausen | 3,979.96 mi (6,405.13 km) |
| Florham Park to Ochtrup | 3,749.46 mi (6,034.18 km) |
| Florham Park to Odenthal | 3,778.23 mi (6,080.48 km) |
| Florham Park to Oelde | 3,797.09 mi (6,110.82 km) |
| Florham Park to Oelsnitz | 3,996.31 mi (6,431.44 km) |
| Florham Park to Oer-Erkenschwick | 3,766.96 mi (6,062.34 km) |
