| Fort Dodge to Oberkirch | 4,577.63 mi (7,366.99 km) |
| Fort Dodge to Obernburg am Main | 4,559.40 mi (7,337.64 km) |
| Fort Dodge to Obernkirchen | 4,455.82 mi (7,170.95 km) |
| Fort Dodge to Oberschleissheim | 4,713.94 mi (7,586.36 km) |
| Fort Dodge to Oberstdorf | 4,705.43 mi (7,572.65 km) |
| Fort Dodge to Obertraubling | 4,702.92 mi (7,568.62 km) |
| Fort Dodge to Obertshausen | 4,538.95 mi (7,304.74 km) |
| Fort Dodge to Oberursel | 4,524.20 mi (7,280.99 km) |
| Fort Dodge to Ochsenfurt | 4,599.89 mi (7,402.80 km) |
| Fort Dodge to Ochsenhausen | 4,664.44 mi (7,506.69 km) |
| Fort Dodge to Ochtrup | 4,393.00 mi (7,069.86 km) |
| Fort Dodge to Odenthal | 4,438.54 mi (7,143.14 km) |
| Fort Dodge to Oelde | 4,441.10 mi (7,147.27 km) |
| Fort Dodge to Oelsnitz | 4,638.37 mi (7,464.73 km) |
| Fort Dodge to Oer-Erkenschwick | 4,418.14 mi (7,110.31 km) |
