| Fort Smith to Oberkirch | 4,941.13 mi (7,951.98 km) |
| Fort Smith to Obernburg am Main | 4,931.97 mi (7,937.24 km) |
| Fort Smith to Obernkirchen | 4,840.22 mi (7,789.58 km) |
| Fort Smith to Oberschleissheim | 5,084.54 mi (8,182.77 km) |
| Fort Smith to Oberstdorf | 5,068.71 mi (8,157.29 km) |
| Fort Smith to Obertraubling | 5,078.38 mi (8,172.86 km) |
| Fort Smith to Obertshausen | 4,911.94 mi (7,905.01 km) |
| Fort Smith to Oberursel | 4,897.29 mi (7,881.42 km) |
| Fort Smith to Ochsenfurt | 4,973.66 mi (8,004.33 km) |
| Fort Smith to Ochsenhausen | 5,030.17 mi (8,095.27 km) |
| Fort Smith to Ochtrup | 4,773.14 mi (7,681.62 km) |
| Fort Smith to Odenthal | 4,812.58 mi (7,745.10 km) |
| Fort Smith to Oelde | 4,821.37 mi (7,759.24 km) |
| Fort Smith to Oelsnitz | 5,020.60 mi (8,079.88 km) |
| Fort Smith to Oer-Erkenschwick | 4,795.56 mi (7,717.71 km) |
