| Haddington to Oberkirch | 687.10 mi (1,105.78 km) |
| Haddington to Obernburg am Main | 650.74 mi (1,047.27 km) |
| Haddington to Obernkirchen | 544.21 mi (875.83 km) |
| Haddington to Oberschleissheim | 806.06 mi (1,297.23 km) |
| Haddington to Oberstdorf | 810.86 mi (1,304.96 km) |
| Haddington to Obertraubling | 790.49 mi (1,272.17 km) |
| Haddington to Obertshausen | 629.99 mi (1,013.87 km) |
| Haddington to Oberursel | 615.28 mi (990.19 km) |
| Haddington to Ochsenfurt | 689.40 mi (1,109.48 km) |
| Haddington to Ochsenhausen | 765.66 mi (1,232.21 km) |
| Haddington to Ochtrup | 479.41 mi (771.54 km) |
| Haddington to Odenthal | 529.41 mi (852.00 km) |
| Haddington to Oelde | 527.50 mi (848.92 km) |
| Haddington to Oelsnitz | 725.38 mi (1,167.39 km) |
| Haddington to Oer-Erkenschwick | 505.59 mi (813.67 km) |
