| Fort Campbell North to Oberkirch | 4,606.67 mi (7,413.72 km) |
| Fort Campbell North to Obernburg am Main | 4,603.47 mi (7,408.57 km) |
| Fort Campbell North to Obernkirchen | 4,520.55 mi (7,275.12 km) |
| Fort Campbell North to Oberschleissheim | 4,754.05 mi (7,650.91 km) |
| Fort Campbell North to Oberstdorf | 4,733.58 mi (7,617.96 km) |
| Fort Campbell North to Obertraubling | 4,751.21 mi (7,646.33 km) |
| Fort Campbell North to Obertshausen | 4,583.82 mi (7,376.94 km) |
| Fort Campbell North to Oberursel | 4,569.29 mi (7,353.57 km) |
| Fort Campbell North to Ochsenfurt | 4,645.80 mi (7,476.68 km) |
| Fort Campbell North to Ochsenhausen | 4,696.75 mi (7,558.69 km) |
| Fort Campbell North to Ochtrup | 4,450.65 mi (7,162.63 km) |
| Fort Campbell North to Odenthal | 4,485.63 mi (7,218.92 km) |
| Fort Campbell North to Oelde | 4,498.75 mi (7,240.04 km) |
| Fort Campbell North to Oelsnitz | 4,698.50 mi (7,561.50 km) |
| Fort Campbell North to Oer-Erkenschwick | 4,471.03 mi (7,195.43 km) |
