| Mercerville to Oberkirch | 3,924.31 mi (6,315.57 km) |
| Mercerville to Obernburg am Main | 3,929.32 mi (6,323.63 km) |
| Mercerville to Obernkirchen | 3,859.50 mi (6,211.26 km) |
| Mercerville to Oberschleissheim | 4,076.32 mi (6,560.20 km) |
| Mercerville to Oberstdorf | 4,049.68 mi (6,517.33 km) |
| Mercerville to Obertraubling | 4,078.04 mi (6,562.96 km) |
| Mercerville to Obertshausen | 3,910.31 mi (6,293.04 km) |
| Mercerville to Oberursel | 3,896.06 mi (6,270.10 km) |
| Mercerville to Ochsenfurt | 3,972.28 mi (6,392.76 km) |
| Mercerville to Ochsenhausen | 4,015.34 mi (6,462.06 km) |
| Mercerville to Ochtrup | 3,786.02 mi (6,093.01 km) |
| Mercerville to Odenthal | 3,814.37 mi (6,138.64 km) |
| Mercerville to Oelde | 3,833.60 mi (6,169.59 km) |
| Mercerville to Oelsnitz | 4,032.74 mi (6,490.07 km) |
| Mercerville to Oer-Erkenschwick | 3,803.33 mi (6,120.87 km) |
