| Oakton to Oberkirch | 4,090.91 mi (6,583.69 km) |
| Oakton to Obernburg am Main | 4,095.38 mi (6,590.88 km) |
| Oakton to Obernkirchen | 4,024.46 mi (6,476.74 km) |
| Oakton to Oberschleissheim | 4,242.66 mi (6,827.90 km) |
| Oakton to Oberstdorf | 4,216.38 mi (6,785.62 km) |
| Oakton to Obertraubling | 4,244.06 mi (6,830.15 km) |
| Oakton to Obertshausen | 4,076.32 mi (6,560.20 km) |
| Oakton to Oberursel | 4,062.04 mi (6,537.23 km) |
| Oakton to Ochsenfurt | 4,138.30 mi (6,659.95 km) |
| Oakton to Ochsenhausen | 4,181.90 mi (6,730.11 km) |
| Oakton to Ochtrup | 3,951.28 mi (6,358.97 km) |
| Oakton to Odenthal | 3,980.18 mi (6,405.49 km) |
| Oakton to Oelde | 3,998.92 mi (6,435.64 km) |
| Oakton to Oelsnitz | 4,198.17 mi (6,756.31 km) |
| Oakton to Oer-Erkenschwick | 3,968.85 mi (6,387.25 km) |
