| Watervliet to Oberkirch | 3,779.33 mi (6,082.25 km) |
| Watervliet to Obernburg am Main | 3,781.12 mi (6,085.12 km) |
| Watervliet to Obernkirchen | 3,706.76 mi (5,965.46 km) |
| Watervliet to Oberschleissheim | 3,929.59 mi (6,324.07 km) |
| Watervliet to Oberstdorf | 3,905.43 mi (6,285.19 km) |
| Watervliet to Obertraubling | 3,929.59 mi (6,324.07 km) |
| Watervliet to Obertshausen | 3,761.86 mi (6,054.12 km) |
| Watervliet to Oberursel | 3,747.49 mi (6,031.01 km) |
| Watervliet to Ochsenfurt | 3,823.88 mi (6,153.94 km) |
| Watervliet to Ochsenhausen | 3,870.03 mi (6,228.22 km) |
| Watervliet to Ochtrup | 3,634.37 mi (5,848.95 km) |
| Watervliet to Odenthal | 3,665.02 mi (5,898.28 km) |
| Watervliet to Oelde | 3,682.17 mi (5,925.87 km) |
| Watervliet to Oelsnitz | 3,881.68 mi (6,246.96 km) |
| Watervliet to Oer-Erkenschwick | 3,652.72 mi (5,878.49 km) |
