| Sierra Madre to Oberkirch | 5,830.68 mi (9,383.58 km) |
| Sierra Madre to Obernburg am Main | 5,795.31 mi (9,326.65 km) |
| Sierra Madre to Obernkirchen | 5,669.31 mi (9,123.87 km) |
| Sierra Madre to Oberschleissheim | 5,950.19 mi (9,575.90 km) |
| Sierra Madre to Oberstdorf | 5,956.07 mi (9,585.37 km) |
| Sierra Madre to Obertraubling | 5,929.47 mi (9,542.57 km) |
| Sierra Madre to Obertshausen | 5,774.50 mi (9,293.17 km) |
| Sierra Madre to Oberursel | 5,759.90 mi (9,269.66 km) |
| Sierra Madre to Ochsenfurt | 5,832.39 mi (9,386.33 km) |
| Sierra Madre to Ochsenhausen | 5,911.34 mi (9,513.38 km) |
| Sierra Madre to Ochtrup | 5,617.38 mi (9,040.30 km) |
| Sierra Madre to Odenthal | 5,674.37 mi (9,132.02 km) |
| Sierra Madre to Oelde | 5,663.97 mi (9,115.28 km) |
| Sierra Madre to Oelsnitz | 5,851.94 mi (9,417.79 km) |
| Sierra Madre to Oer-Erkenschwick | 5,647.58 mi (9,088.90 km) |
