| Tracy to Oberkirch | 5,721.75 mi (9,208.27 km) |
| Tracy to Obernburg am Main | 5,679.42 mi (9,140.14 km) |
| Tracy to Obernkirchen | 5,545.67 mi (8,924.90 km) |
| Tracy to Oberschleissheim | 5,833.02 mi (9,387.33 km) |
| Tracy to Oberstdorf | 5,844.96 mi (9,406.56 km) |
| Tracy to Obertraubling | 5,808.53 mi (9,347.92 km) |
| Tracy to Obertshausen | 5,658.66 mi (9,106.73 km) |
| Tracy to Oberursel | 5,644.25 mi (9,083.54 km) |
| Tracy to Ochsenfurt | 5,714.76 mi (9,197.02 km) |
| Tracy to Ochsenhausen | 5,799.02 mi (9,332.61 km) |
| Tracy to Ochtrup | 5,498.50 mi (8,848.98 km) |
| Tracy to Odenthal | 5,559.58 mi (8,947.28 km) |
| Tracy to Oelde | 5,544.05 mi (8,922.28 km) |
| Tracy to Oelsnitz | 5,726.60 mi (9,216.07 km) |
| Tracy to Oer-Erkenschwick | 5,530.43 mi (8,900.36 km) |
