| Essex to Oberkirch | 4,037.30 mi (6,497.41 km) |
| Essex to Obernburg am Main | 4,042.01 mi (6,504.99 km) |
| Essex to Obernkirchen | 3,971.55 mi (6,391.59 km) |
| Essex to Oberschleissheim | 4,189.17 mi (6,741.82 km) |
| Essex to Oberstdorf | 4,162.73 mi (6,699.26 km) |
| Essex to Obertraubling | 4,190.71 mi (6,744.29 km) |
| Essex to Obertshausen | 4,022.97 mi (6,474.35 km) |
| Essex to Oberursel | 4,008.71 mi (6,451.39 km) |
| Essex to Ochsenfurt | 4,084.95 mi (6,574.09 km) |
| Essex to Ochsenhausen | 4,128.31 mi (6,643.87 km) |
| Essex to Ochtrup | 3,898.25 mi (6,273.62 km) |
| Essex to Odenthal | 3,926.92 mi (6,319.77 km) |
| Essex to Oelde | 3,945.86 mi (6,350.25 km) |
| Essex to Oelsnitz | 4,145.07 mi (6,670.85 km) |
| Essex to Oer-Erkenschwick | 3,915.71 mi (6,301.73 km) |
