| Martinsburg to Oberkirch | 4,093.57 mi (6,587.96 km) |
| Martinsburg to Obernburg am Main | 4,096.43 mi (6,592.57 km) |
| Martinsburg to Obernkirchen | 4,023.12 mi (6,474.59 km) |
| Martinsburg to Oberschleissheim | 4,244.46 mi (6,830.79 km) |
| Martinsburg to Oberstdorf | 4,219.40 mi (6,790.47 km) |
| Martinsburg to Obertraubling | 4,244.99 mi (6,831.65 km) |
| Martinsburg to Obertshausen | 4,077.24 mi (6,561.68 km) |
| Martinsburg to Oberursel | 4,062.91 mi (6,538.62 km) |
| Martinsburg to Ochsenfurt | 4,139.25 mi (6,661.48 km) |
| Martinsburg to Ochsenhausen | 4,184.40 mi (6,734.13 km) |
| Martinsburg to Ochtrup | 3,950.52 mi (6,357.75 km) |
| Martinsburg to Odenthal | 3,980.64 mi (6,406.22 km) |
| Martinsburg to Oelde | 3,998.28 mi (6,434.61 km) |
| Martinsburg to Oelsnitz | 4,197.73 mi (6,755.60 km) |
| Martinsburg to Oer-Erkenschwick | 3,968.66 mi (6,386.93 km) |
