| River Edge to Oberkirch | 3,867.93 mi (6,224.83 km) |
| River Edge to Obernburg am Main | 3,872.45 mi (6,232.11 km) |
| River Edge to Obernkirchen | 3,802.00 mi (6,118.73 km) |
| River Edge to Oberschleissheim | 4,019.68 mi (6,469.04 km) |
| River Edge to Oberstdorf | 3,993.42 mi (6,426.78 km) |
| River Edge to Obertraubling | 4,021.14 mi (6,471.40 km) |
| River Edge to Obertshausen | 3,853.40 mi (6,201.45 km) |
| River Edge to Oberursel | 3,839.13 mi (6,178.49 km) |
| River Edge to Ochsenfurt | 3,915.38 mi (6,301.20 km) |
| River Edge to Ochsenhausen | 3,958.91 mi (6,371.25 km) |
| River Edge to Ochtrup | 3,728.66 mi (6,000.70 km) |
| River Edge to Odenthal | 3,757.33 mi (6,046.84 km) |
| River Edge to Oelde | 3,776.28 mi (6,077.33 km) |
| River Edge to Oelsnitz | 3,975.48 mi (6,397.91 km) |
| River Edge to Oer-Erkenschwick | 3,746.11 mi (6,028.79 km) |
