| Ridgefield to Oberkirch | 3,870.98 mi (6,229.73 km) |
| Ridgefield to Obernburg am Main | 3,875.68 mi (6,237.31 km) |
| Ridgefield to Obernkirchen | 3,805.51 mi (6,124.37 km) |
| Ridgefield to Oberschleissheim | 4,022.82 mi (6,474.10 km) |
| Ridgefield to Oberstdorf | 3,996.42 mi (6,431.62 km) |
| Ridgefield to Obertraubling | 4,024.38 mi (6,476.62 km) |
| Ridgefield to Obertshausen | 3,856.65 mi (6,206.68 km) |
| Ridgefield to Oberursel | 3,842.39 mi (6,183.73 km) |
| Ridgefield to Ochsenfurt | 3,918.62 mi (6,306.42 km) |
| Ridgefield to Ochsenhausen | 3,961.97 mi (6,376.18 km) |
| Ridgefield to Ochtrup | 3,732.10 mi (6,006.24 km) |
| Ridgefield to Odenthal | 3,760.63 mi (6,052.15 km) |
| Ridgefield to Oelde | 3,779.70 mi (6,082.84 km) |
| Ridgefield to Oelsnitz | 3,978.88 mi (6,403.38 km) |
| Ridgefield to Oer-Erkenschwick | 3,749.49 mi (6,034.22 km) |
