| Adrian to Oberkirch | 4,226.82 mi (6,802.42 km) |
| Adrian to Obernburg am Main | 4,219.70 mi (6,790.95 km) |
| Adrian to Obernkirchen | 4,131.74 mi (6,649.39 km) |
| Adrian to Oberschleissheim | 4,371.60 mi (7,035.40 km) |
| Adrian to Oberstdorf | 4,354.25 mi (7,007.48 km) |
| Adrian to Obertraubling | 4,366.69 mi (7,027.50 km) |
| Adrian to Obertshausen | 4,199.81 mi (6,758.94 km) |
| Adrian to Oberursel | 4,185.20 mi (6,735.42 km) |
| Adrian to Ochsenfurt | 4,261.65 mi (6,858.47 km) |
| Adrian to Ochsenhausen | 4,316.22 mi (6,946.28 km) |
| Adrian to Ochtrup | 4,063.30 mi (6,539.25 km) |
| Adrian to Odenthal | 4,100.86 mi (6,599.70 km) |
| Adrian to Oelde | 4,111.50 mi (6,616.82 km) |
| Adrian to Oelsnitz | 4,311.06 mi (6,937.99 km) |
| Adrian to Oer-Erkenschwick | 4,084.84 mi (6,573.91 km) |
