| Barrow in Furness to Oberkirch | 620.83 mi (999.14 km) |
| Barrow in Furness to Obernburg am Main | 602.27 mi (969.25 km) |
| Barrow in Furness to Obernkirchen | 525.93 mi (846.40 km) |
| Barrow in Furness to Oberschleissheim | 755.71 mi (1,216.19 km) |
| Barrow in Furness to Oberstdorf | 748.08 mi (1,203.93 km) |
| Barrow in Furness to Obertraubling | 748.78 mi (1,205.05 km) |
| Barrow in Furness to Obertshausen | 582.18 mi (936.93 km) |
| Barrow in Furness to Oberursel | 567.51 mi (913.33 km) |
| Barrow in Furness to Ochsenfurt | 643.89 mi (1,036.24 km) |
| Barrow in Furness to Ochsenhausen | 705.95 mi (1,136.11 km) |
| Barrow in Furness to Ochtrup | 450.69 mi (725.31 km) |
| Barrow in Furness to Odenthal | 482.96 mi (777.24 km) |
| Barrow in Furness to Oelde | 498.16 mi (801.70 km) |
| Barrow in Furness to Oelsnitz | 697.40 mi (1,122.35 km) |
| Barrow in Furness to Oer-Erkenschwick | 468.45 mi (753.89 km) |
