| Storm Lake to Oberkirch | 4,607.68 mi (7,415.35 km) |
| Storm Lake to Obernburg am Main | 4,588.24 mi (7,384.05 km) |
| Storm Lake to Obernkirchen | 4,483.03 mi (7,214.73 km) |
| Storm Lake to Oberschleissheim | 4,742.96 mi (7,633.05 km) |
| Storm Lake to Oberstdorf | 4,735.43 mi (7,620.93 km) |
| Storm Lake to Obertraubling | 4,731.27 mi (7,614.24 km) |
| Storm Lake to Obertshausen | 4,567.75 mi (7,351.08 km) |
| Storm Lake to Oberursel | 4,552.98 mi (7,327.32 km) |
| Storm Lake to Ochsenfurt | 4,628.53 mi (7,448.90 km) |
| Storm Lake to Ochsenhausen | 4,694.14 mi (7,554.48 km) |
| Storm Lake to Ochtrup | 4,420.88 mi (7,114.71 km) |
| Storm Lake to Odenthal | 4,467.24 mi (7,189.34 km) |
| Storm Lake to Oelde | 4,468.93 mi (7,192.04 km) |
| Storm Lake to Oelsnitz | 4,665.78 mi (7,508.85 km) |
| Storm Lake to Oer-Erkenschwick | 4,446.39 mi (7,155.77 km) |
