| Union Hill-Novelty Hill to Oberkirch | 5,149.24 mi (8,286.90 km) |
| Union Hill-Novelty Hill to Obernburg am Main | 5,098.11 mi (8,204.62 km) |
| Union Hill-Novelty Hill to Obernkirchen | 4,955.49 mi (7,975.09 km) |
| Union Hill-Novelty Hill to Oberschleissheim | 5,248.84 mi (8,447.20 km) |
| Union Hill-Novelty Hill to Oberstdorf | 5,268.55 mi (8,478.91 km) |
| Union Hill-Novelty Hill to Obertraubling | 5,219.75 mi (8,400.38 km) |
| Union Hill-Novelty Hill to Obertshausen | 5,077.57 mi (8,171.56 km) |
| Union Hill-Novelty Hill to Oberursel | 5,063.54 mi (8,148.98 km) |
| Union Hill-Novelty Hill to Ochsenfurt | 5,130.92 mi (8,257.42 km) |
| Union Hill-Novelty Hill to Ochsenhausen | 5,221.39 mi (8,403.01 km) |
| Union Hill-Novelty Hill to Ochtrup | 4,914.76 mi (7,909.55 km) |
| Union Hill-Novelty Hill to Odenthal | 4,980.67 mi (8,015.62 km) |
| Union Hill-Novelty Hill to Oelde | 4,958.60 mi (7,980.10 km) |
| Union Hill-Novelty Hill to Oelsnitz | 5,132.93 mi (8,260.65 km) |
| Union Hill-Novelty Hill to Oer-Erkenschwick | 4,948.69 mi (7,964.14 km) |
