| Clearlake to Oberkirch | 5,681.24 mi (9,143.07 km) |
| Clearlake to Obernburg am Main | 5,636.60 mi (9,071.23 km) |
| Clearlake to Obernkirchen | 5,500.39 mi (8,852.02 km) |
| Clearlake to Oberschleissheim | 5,789.57 mi (9,317.42 km) |
| Clearlake to Oberstdorf | 5,803.56 mi (9,339.93 km) |
| Clearlake to Obertraubling | 5,763.84 mi (9,276.00 km) |
| Clearlake to Obertshausen | 5,615.88 mi (9,037.88 km) |
| Clearlake to Oberursel | 5,601.55 mi (9,014.83 km) |
| Clearlake to Ochsenfurt | 5,671.31 mi (9,127.08 km) |
| Clearlake to Ochsenhausen | 5,757.26 mi (9,265.41 km) |
| Clearlake to Ochtrup | 5,454.88 mi (8,778.78 km) |
| Clearlake to Odenthal | 5,517.27 mi (8,879.20 km) |
| Clearlake to Oelde | 5,500.02 mi (8,851.43 km) |
| Clearlake to Oelsnitz | 5,680.52 mi (9,141.91 km) |
| Clearlake to Oer-Erkenschwick | 5,487.36 mi (8,831.05 km) |
