| Derry to Oberkirch | 793.68 mi (1,277.30 km) |
| Derry to Obernburg am Main | 777.91 mi (1,251.93 km) |
| Derry to Obernkirchen | 698.34 mi (1,123.87 km) |
| Derry to Oberschleissheim | 931.04 mi (1,498.36 km) |
| Derry to Oberstdorf | 921.32 mi (1,482.72 km) |
| Derry to Obertraubling | 924.54 mi (1,487.91 km) |
| Derry to Obertshausen | 757.87 mi (1,219.68 km) |
| Derry to Oberursel | 743.22 mi (1,196.10 km) |
| Derry to Ochsenfurt | 819.62 mi (1,319.05 km) |
| Derry to Ochsenhausen | 880.00 mi (1,416.22 km) |
| Derry to Ochtrup | 624.82 mi (1,005.56 km) |
| Derry to Odenthal | 658.72 mi (1,060.10 km) |
| Derry to Oelde | 672.60 mi (1,082.45 km) |
| Derry to Oelsnitz | 872.18 mi (1,403.65 km) |
| Derry to Oer-Erkenschwick | 643.75 mi (1,036.02 km) |
