| Glen Cove to Oberkirch | 3,853.33 mi (6,201.34 km) |
| Glen Cove to Obernburg am Main | 3,858.36 mi (6,209.44 km) |
| Glen Cove to Obernkirchen | 3,788.71 mi (6,097.33 km) |
| Glen Cove to Oberschleissheim | 4,005.34 mi (6,445.98 km) |
| Glen Cove to Oberstdorf | 3,978.70 mi (6,403.10 km) |
| Glen Cove to Obertraubling | 4,007.08 mi (6,448.78 km) |
| Glen Cove to Obertshausen | 3,839.36 mi (6,178.85 km) |
| Glen Cove to Oberursel | 3,825.11 mi (6,155.92 km) |
| Glen Cove to Ochsenfurt | 3,901.32 mi (6,278.58 km) |
| Glen Cove to Ochsenhausen | 3,944.36 mi (6,347.83 km) |
| Glen Cove to Ochtrup | 3,715.18 mi (5,979.00 km) |
| Glen Cove to Odenthal | 3,743.44 mi (6,024.49 km) |
| Glen Cove to Oelde | 3,762.75 mi (6,055.56 km) |
| Glen Cove to Oelsnitz | 3,961.87 mi (6,376.01 km) |
| Glen Cove to Oer-Erkenschwick | 3,732.44 mi (6,006.78 km) |
