| Rock Springs to Oberkirch | 5,134.91 mi (8,263.84 km) |
| Rock Springs to Obernburg am Main | 5,102.22 mi (8,211.23 km) |
| Rock Springs to Obernkirchen | 4,979.92 mi (8,014.41 km) |
| Rock Springs to Oberschleissheim | 5,257.39 mi (8,460.95 km) |
| Rock Springs to Oberstdorf | 5,260.91 mi (8,466.61 km) |
| Rock Springs to Obertraubling | 5,238.34 mi (8,430.30 km) |
| Rock Springs to Obertshausen | 5,081.43 mi (8,177.77 km) |
| Rock Springs to Oberursel | 5,066.77 mi (8,154.17 km) |
| Rock Springs to Ochsenfurt | 5,139.98 mi (8,271.99 km) |
| Rock Springs to Ochsenhausen | 5,216.68 mi (8,395.44 km) |
| Rock Springs to Ochtrup | 4,925.87 mi (7,927.42 km) |
| Rock Springs to Odenthal | 4,981.03 mi (8,016.19 km) |
| Rock Springs to Oelde | 4,972.85 mi (8,003.02 km) |
| Rock Springs to Oelsnitz | 5,163.04 mi (8,309.11 km) |
| Rock Springs to Oer-Erkenschwick | 4,955.26 mi (7,974.71 km) |
