| Loudoun Valley Estates to Oberkirch | 4,095.42 mi (6,590.94 km) |
| Loudoun Valley Estates to Obernburg am Main | 4,099.53 mi (6,597.56 km) |
| Loudoun Valley Estates to Obernkirchen | 4,028.08 mi (6,482.57 km) |
| Loudoun Valley Estates to Oberschleissheim | 4,246.98 mi (6,834.85 km) |
| Loudoun Valley Estates to Oberstdorf | 4,220.97 mi (6,793.00 km) |
| Loudoun Valley Estates to Obertraubling | 4,248.19 mi (6,836.80 km) |
| Loudoun Valley Estates to Obertshausen | 4,080.44 mi (6,566.84 km) |
| Loudoun Valley Estates to Oberursel | 4,066.15 mi (6,543.84 km) |
| Loudoun Valley Estates to Ochsenfurt | 4,142.43 mi (6,666.60 km) |
| Loudoun Valley Estates to Ochsenhausen | 4,186.37 mi (6,737.31 km) |
| Loudoun Valley Estates to Ochtrup | 3,955.03 mi (6,365.00 km) |
| Loudoun Valley Estates to Odenthal | 3,984.20 mi (6,411.95 km) |
| Loudoun Valley Estates to Oelde | 4,002.69 mi (6,441.71 km) |
| Loudoun Valley Estates to Oelsnitz | 4,202.00 mi (6,762.46 km) |
| Loudoun Valley Estates to Oer-Erkenschwick | 3,972.73 mi (6,393.48 km) |
