| Ames to Oberkirch | 892.91 mi (1,436.99 km) |
| Ames to Obernburg am Main | 970.16 mi (1,561.32 km) |
| Ames to Obernkirchen | 1,045.57 mi (1,682.68 km) |
| Ames to Oberschleissheim | 1,040.74 mi (1,674.91 km) |
| Ames to Oberstdorf | 969.84 mi (1,560.80 km) |
| Ames to Obertraubling | 1,079.41 mi (1,737.14 km) |
| Ames to Obertshausen | 963.85 mi (1,551.16 km) |
| Ames to Oberursel | 957.47 mi (1,540.91 km) |
| Ames to Ochsenfurt | 1,003.70 mi (1,615.29 km) |
| Ames to Ochsenhausen | 965.39 mi (1,553.65 km) |
| Ames to Ochtrup | 974.93 mi (1,568.99 km) |
| Ames to Odenthal | 928.07 mi (1,493.59 km) |
| Ames to Oelde | 994.88 mi (1,601.10 km) |
| Ames to Oelsnitz | 1,109.46 mi (1,785.50 km) |
| Ames to Oer-Erkenschwick | 955.31 mi (1,537.42 km) |
