| Sammamish to Oberkirch | 5,154.09 mi (8,294.71 km) |
| Sammamish to Obernburg am Main | 5,103.02 mi (8,212.52 km) |
| Sammamish to Obernkirchen | 4,960.45 mi (7,983.07 km) |
| Sammamish to Oberschleissheim | 5,253.77 mi (8,455.13 km) |
| Sammamish to Oberstdorf | 5,273.43 mi (8,486.77 km) |
| Sammamish to Obertraubling | 5,224.71 mi (8,408.36 km) |
| Sammamish to Obertshausen | 5,082.48 mi (8,179.46 km) |
| Sammamish to Oberursel | 5,068.44 mi (8,156.87 km) |
| Sammamish to Ochsenfurt | 5,135.85 mi (8,265.35 km) |
| Sammamish to Ochsenhausen | 5,226.27 mi (8,410.87 km) |
| Sammamish to Ochtrup | 4,919.68 mi (7,917.46 km) |
| Sammamish to Odenthal | 4,985.56 mi (8,023.49 km) |
| Sammamish to Oelde | 4,963.53 mi (7,988.03 km) |
| Sammamish to Oelsnitz | 5,137.91 mi (8,268.67 km) |
| Sammamish to Oer-Erkenschwick | 4,953.59 mi (7,972.04 km) |
