| Gloucester Point to Oberkirch | 4,129.35 mi (6,645.55 km) |
| Gloucester Point to Obernburg am Main | 4,137.18 mi (6,658.15 km) |
| Gloucester Point to Obernkirchen | 4,071.27 mi (6,552.07 km) |
| Gloucester Point to Oberschleissheim | 4,282.78 mi (6,892.46 km) |
| Gloucester Point to Oberstdorf | 4,253.95 mi (6,846.07 km) |
| Gloucester Point to Obertraubling | 4,286.00 mi (6,897.65 km) |
| Gloucester Point to Obertshausen | 4,118.41 mi (6,627.93 km) |
| Gloucester Point to Oberursel | 4,104.26 mi (6,605.17 km) |
| Gloucester Point to Ochsenfurt | 4,180.28 mi (6,727.51 km) |
| Gloucester Point to Ochsenhausen | 4,220.58 mi (6,792.37 km) |
| Gloucester Point to Ochtrup | 3,996.93 mi (6,432.44 km) |
| Gloucester Point to Odenthal | 4,023.31 mi (6,474.90 km) |
| Gloucester Point to Oelde | 4,044.30 mi (6,508.67 km) |
| Gloucester Point to Oelsnitz | 4,242.99 mi (6,828.43 km) |
| Gloucester Point to Oer-Erkenschwick | 4,013.35 mi (6,458.86 km) |
