| Alum Rock to Oberkirch | 5,753.40 mi (9,259.20 km) |
| Alum Rock to Obernburg am Main | 5,710.94 mi (9,190.87 km) |
| Alum Rock to Obernkirchen | 5,577.04 mi (8,975.38 km) |
| Alum Rock to Oberschleissheim | 5,864.50 mi (9,438.01 km) |
| Alum Rock to Oberstdorf | 5,876.56 mi (9,457.42 km) |
| Alum Rock to Obertraubling | 5,839.94 mi (9,398.47 km) |
| Alum Rock to Obertshausen | 5,690.18 mi (9,157.46 km) |
| Alum Rock to Oberursel | 5,675.78 mi (9,134.28 km) |
| Alum Rock to Ochsenfurt | 5,746.25 mi (9,247.69 km) |
| Alum Rock to Ochsenhausen | 5,830.60 mi (9,383.44 km) |
| Alum Rock to Ochtrup | 5,529.97 mi (8,899.63 km) |
| Alum Rock to Odenthal | 5,591.13 mi (8,998.05 km) |
| Alum Rock to Oelde | 5,575.49 mi (8,972.89 km) |
| Alum Rock to Oelsnitz | 5,757.92 mi (9,266.47 km) |
| Alum Rock to Oer-Erkenschwick | 5,561.93 mi (8,951.06 km) |
