| Great Harwood to Oberkirch | 580.71 mi (934.56 km) |
| Great Harwood to Obernburg am Main | 562.71 mi (905.60 km) |
| Great Harwood to Obernkirchen | 489.75 mi (788.18 km) |
| Great Harwood to Oberschleissheim | 715.92 mi (1,152.17 km) |
| Great Harwood to Oberstdorf | 707.96 mi (1,139.36 km) |
| Great Harwood to Obertraubling | 709.52 mi (1,141.86 km) |
| Great Harwood to Obertshausen | 542.70 mi (873.39 km) |
| Great Harwood to Oberursel | 528.05 mi (849.82 km) |
| Great Harwood to Ochsenfurt | 604.48 mi (972.81 km) |
| Great Harwood to Ochsenhausen | 665.87 mi (1,071.62 km) |
| Great Harwood to Ochtrup | 413.45 mi (665.39 km) |
| Great Harwood to Odenthal | 443.75 mi (714.14 km) |
| Great Harwood to Oelde | 460.62 mi (741.30 km) |
| Great Harwood to Oelsnitz | 659.46 mi (1,061.30 km) |
| Great Harwood to Oer-Erkenschwick | 430.14 mi (692.24 km) |
