| Greenfield to Oberkirch | 4,329.31 mi (6,967.35 km) |
| Greenfield to Obernburg am Main | 4,316.64 mi (6,946.96 km) |
| Greenfield to Obernkirchen | 4,220.85 mi (6,792.80 km) |
| Greenfield to Oberschleissheim | 4,470.08 mi (7,193.90 km) |
| Greenfield to Oberstdorf | 4,457.10 mi (7,173.01 km) |
| Greenfield to Obertraubling | 4,462.14 mi (7,181.12 km) |
| Greenfield to Obertshausen | 4,296.45 mi (6,914.46 km) |
| Greenfield to Oberursel | 4,281.74 mi (6,890.79 km) |
| Greenfield to Ochsenfurt | 4,357.93 mi (7,013.42 km) |
| Greenfield to Ochsenhausen | 4,417.54 mi (7,109.34 km) |
| Greenfield to Ochtrup | 4,155.06 mi (6,686.92 km) |
| Greenfield to Odenthal | 4,196.62 mi (6,753.80 km) |
| Greenfield to Oelde | 4,203.29 mi (6,764.53 km) |
| Greenfield to Oelsnitz | 4,402.04 mi (7,084.41 km) |
| Greenfield to Oer-Erkenschwick | 4,178.40 mi (6,724.49 km) |
