| Foster City to Oberkirch | 5,754.71 mi (9,261.31 km) |
| Foster City to Obernburg am Main | 5,711.61 mi (9,191.94 km) |
| Foster City to Obernkirchen | 5,577.00 mi (8,975.32 km) |
| Foster City to Oberschleissheim | 5,865.00 mi (9,438.81 km) |
| Foster City to Oberstdorf | 5,877.63 mi (9,459.14 km) |
| Foster City to Obertraubling | 5,840.08 mi (9,398.70 km) |
| Foster City to Obertshausen | 5,690.85 mi (9,158.55 km) |
| Foster City to Oberursel | 5,676.47 mi (9,135.40 km) |
| Foster City to Ochsenfurt | 5,746.73 mi (9,248.47 km) |
| Foster City to Ochsenhausen | 5,831.57 mi (9,385.00 km) |
| Foster City to Ochtrup | 5,530.40 mi (8,900.32 km) |
| Foster City to Odenthal | 5,591.93 mi (8,999.34 km) |
| Foster City to Oelde | 5,575.81 mi (8,973.40 km) |
| Foster City to Oelsnitz | 5,757.66 mi (9,266.06 km) |
| Foster City to Oer-Erkenschwick | 5,562.52 mi (8,952.01 km) |
