| Clemmons to Oberkirch | 4,347.98 mi (6,997.40 km) |
| Clemmons to Obernburg am Main | 4,353.47 mi (7,006.23 km) |
| Clemmons to Obernkirchen | 4,283.66 mi (6,893.88 km) |
| Clemmons to Oberschleissheim | 4,500.28 mi (7,242.50 km) |
| Clemmons to Oberstdorf | 4,473.17 mi (7,198.87 km) |
| Clemmons to Obertraubling | 4,502.20 mi (7,245.59 km) |
| Clemmons to Obertshausen | 4,334.48 mi (6,975.67 km) |
| Clemmons to Oberursel | 4,320.24 mi (6,952.75 km) |
| Clemmons to Ochsenfurt | 4,396.44 mi (7,075.39 km) |
| Clemmons to Ochsenhausen | 4,439.06 mi (7,143.97 km) |
| Clemmons to Ochtrup | 4,210.25 mi (6,775.75 km) |
| Clemmons to Odenthal | 4,238.60 mi (6,821.37 km) |
| Clemmons to Oelde | 4,257.84 mi (6,852.34 km) |
| Clemmons to Oelsnitz | 4,457.00 mi (7,172.85 km) |
| Clemmons to Oer-Erkenschwick | 4,227.59 mi (6,803.65 km) |
