| Middle Valley to Oberkirch | 4,585.60 mi (7,379.82 km) |
| Middle Valley to Obernburg am Main | 4,586.97 mi (7,382.01 km) |
| Middle Valley to Obernkirchen | 4,510.69 mi (7,259.25 km) |
| Middle Valley to Oberschleissheim | 4,735.71 mi (7,621.40 km) |
| Middle Valley to Oberstdorf | 4,711.71 mi (7,582.76 km) |
| Middle Valley to Obertraubling | 4,735.36 mi (7,620.82 km) |
| Middle Valley to Obertshausen | 4,567.64 mi (7,350.91 km) |
| Middle Valley to Oberursel | 4,553.25 mi (7,327.75 km) |
| Middle Valley to Ochsenfurt | 4,629.67 mi (7,450.73 km) |
| Middle Valley to Ochsenhausen | 4,676.29 mi (7,525.77 km) |
| Middle Valley to Ochtrup | 4,438.94 mi (7,143.79 km) |
| Middle Valley to Odenthal | 4,470.56 mi (7,194.67 km) |
| Middle Valley to Oelde | 4,486.83 mi (7,220.86 km) |
| Middle Valley to Oelsnitz | 4,686.47 mi (7,542.15 km) |
| Middle Valley to Oer-Erkenschwick | 4,457.79 mi (7,174.12 km) |
