| Olney to Oberkirch | 4,070.03 mi (6,550.08 km) |
| Olney to Obernburg am Main | 4,074.33 mi (6,557.01 km) |
| Olney to Obernkirchen | 4,003.20 mi (6,442.53 km) |
| Olney to Oberschleissheim | 4,221.69 mi (6,794.15 km) |
| Olney to Oberstdorf | 4,195.54 mi (6,752.08 km) |
| Olney to Obertraubling | 4,223.00 mi (6,796.26 km) |
| Olney to Obertshausen | 4,055.26 mi (6,526.31 km) |
| Olney to Oberursel | 4,040.98 mi (6,503.33 km) |
| Olney to Ochsenfurt | 4,117.25 mi (6,626.07 km) |
| Olney to Ochsenhausen | 4,161.00 mi (6,696.48 km) |
| Olney to Ochtrup | 3,930.07 mi (6,324.83 km) |
| Olney to Odenthal | 3,959.08 mi (6,371.52 km) |
| Olney to Oelde | 3,977.72 mi (6,401.52 km) |
| Olney to Oelsnitz | 4,176.99 mi (6,722.22 km) |
| Olney to Oer-Erkenschwick | 3,947.69 mi (6,353.19 km) |
