| Fort Meade to Oberkirch | 4,058.26 mi (6,531.14 km) |
| Fort Meade to Obernburg am Main | 4,062.97 mi (6,538.72 km) |
| Fort Meade to Obernkirchen | 3,992.47 mi (6,425.26 km) |
| Fort Meade to Oberschleissheim | 4,210.13 mi (6,775.55 km) |
| Fort Meade to Oberstdorf | 4,183.68 mi (6,732.98 km) |
| Fort Meade to Obertraubling | 4,211.67 mi (6,778.02 km) |
| Fort Meade to Obertshausen | 4,043.93 mi (6,508.08 km) |
| Fort Meade to Oberursel | 4,029.67 mi (6,485.12 km) |
| Fort Meade to Ochsenfurt | 4,105.91 mi (6,607.82 km) |
| Fort Meade to Ochsenhausen | 4,149.27 mi (6,677.60 km) |
| Fort Meade to Ochtrup | 3,919.18 mi (6,307.31 km) |
| Fort Meade to Odenthal | 3,947.87 mi (6,353.49 km) |
| Fort Meade to Oelde | 3,966.80 mi (6,383.95 km) |
| Fort Meade to Oelsnitz | 4,166.01 mi (6,704.55 km) |
| Fort Meade to Oer-Erkenschwick | 3,936.66 mi (6,335.43 km) |
