| Ulstein to Oberkirch | 958.93 mi (1,543.25 km) |
| Ulstein to Obernburg am Main | 873.75 mi (1,406.16 km) |
| Ulstein to Obernkirchen | 707.48 mi (1,138.58 km) |
| Ulstein to Oberschleissheim | 999.28 mi (1,608.18 km) |
| Ulstein to Oberstdorf | 1,046.99 mi (1,684.96 km) |
| Ulstein to Obertraubling | 956.26 mi (1,538.96 km) |
| Ulstein to Obertshausen | 856.59 mi (1,378.55 km) |
| Ulstein to Oberursel | 845.98 mi (1,361.47 km) |
| Ulstein to Ochsenfurt | 892.42 mi (1,436.21 km) |
| Ulstein to Ochsenhausen | 999.56 mi (1,608.63 km) |
| Ulstein to Ochtrup | 703.09 mi (1,131.51 km) |
| Ulstein to Odenthal | 783.78 mi (1,261.37 km) |
| Ulstein to Oelde | 732.05 mi (1,178.12 km) |
| Ulstein to Oelsnitz | 858.58 mi (1,381.75 km) |
| Ulstein to Oer-Erkenschwick | 742.10 mi (1,194.29 km) |
