| West Covina to Oberkirch | 5,833.00 mi (9,387.30 km) |
| West Covina to Obernburg am Main | 5,797.89 mi (9,330.80 km) |
| West Covina to Obernkirchen | 5,672.19 mi (9,128.52 km) |
| West Covina to Oberschleissheim | 5,952.80 mi (9,580.11 km) |
| West Covina to Oberstdorf | 5,958.45 mi (9,589.20 km) |
| West Covina to Obertraubling | 5,932.23 mi (9,547.00 km) |
| West Covina to Obertshausen | 5,777.08 mi (9,297.32 km) |
| West Covina to Oberursel | 5,762.47 mi (9,273.80 km) |
| West Covina to Ochsenfurt | 5,835.03 mi (9,390.58 km) |
| West Covina to Ochsenhausen | 5,913.77 mi (9,517.30 km) |
| West Covina to Ochtrup | 5,620.09 mi (9,044.67 km) |
| West Covina to Odenthal | 5,676.92 mi (9,136.13 km) |
| West Covina to Oelde | 5,666.72 mi (9,119.70 km) |
| West Covina to Oelsnitz | 5,854.87 mi (9,422.50 km) |
| West Covina to Oer-Erkenschwick | 5,650.22 mi (9,093.15 km) |
